MESON Chess Problem Database
Problem Display
PID: 187296 (2n2N2/1Bp1p1Rp/6bN/1nP1k1P1/R7/3pP3/1K1Q1B1b/8 w - - 0 1)
Petrov, Evgeny Aleksandrovich
Suomen Shakki, 1982
#2
11 + 9
SOLUTION
- SOUND
- Sets
- 1...Bg1
- 2.Bg3#
- 1...Bg3
- 2.Bxg3#
- 1...Bf4
- 2.exf4#
- 1...Be4
- 2.Rxe4#
- 1...Bf5
- 2.Sf7#
- 1...Bh5
- 2.Re4#
- 1...Bf7
- 2.Re4#
- 1...Be8
- 2.Re4#
- 1...Sa3
- 2.Qc3#
- 1...Sc3
- 2.Qxc3#
- 1...Sd4
- 2.exd4#
- 1...Sbd6
- 2.Qc3#
- 1...Sba7
- 2.Qc3#
- 1...Sb6
- 2.Rxe7#
- 1...Scd6
- 2.Rxe7#
- 1...Sca7
- 2.Rxe7#
- 1...e6
- 2.Sd7#
- 1...Bg1
- Tries
- 1.Ka1?
- 1...Bg1
- 2.Bg3#
- 1...Bg3
- 2.Bxg3#
- 1...Bf4
- 2.exf4#
- 1...Be4
- 2.Rxe4#
- 1...Bf5
- 2.Sf7#
- 1...Bh5
- 2.Re4#
- 1...Bf7
- 2.Re4#
- 1...Be8
- 2.Re4#
- 1...Sa3
- 2.Qc3#
- 2.Qb2#
- 1...Sc3
- 2.Qxc3#
- 1...Sd4
- 2.exd4#
- 1...Sbd6
- 2.Qc3#
- 2.Qb2#
- 1...Sba7
- 2.Qc3#
- 2.Qb2#
- 1...Sb6
- 2.Rxe7#
- 1...Scd6
- 2.Rxe7#
- 1...Sca7
- 2.Rxe7#
- 1...e6
- 2.Sd7#
- 1...c6!
- 1...Bg1
- 1.Kc1?
- 1...Bg1
- 2.Bg3#
- 1...Bg3
- 2.Bxg3#
- 1...Bf4
- 2.exf4#
- 1...Be4
- 2.Rxe4#
- 1...Bf5
- 2.Sf7#
- 1...Bh5
- 2.Re4#
- 1...Bf7
- 2.Re4#
- 1...Be8
- 2.Re4#
- 1...Sa3
- 2.Qc3#
- 2.Qb2#
- 1...Sc3
- 2.Qxc3#
- 1...Sd4
- 2.exd4#
- 1...Sbd6
- 2.Qc3#
- 2.Qb2#
- 1...Sba7
- 2.Qc3#
- 2.Qb2#
- 1...Sb6
- 2.Rxe7#
- 1...Scd6
- 2.Rxe7#
- 1...Sca7
- 2.Rxe7#
- 1...e6
- 2.Sd7#
- 1...c6!
- 1...Bg1
- 1.Sf7+?
- 1...Kf5
- 2.Qxd3#
- 1...Bxf7!
- 1...Kf5
- 1.Sxg6+?
- 1...hxg6
- 2.Re4#
- 1...Ke6!
- 1...hxg6
- 1.Be1?
- threat
- 2.Qxh2#
- 1...Bg1
- 2.Bg3#
- 1...Bg3
- 2.Bxg3#
- 1...Bf4
- 2.exf4#
- 1...c6!
- threat
- 1.Bh4?
- threat
- 2.Qxh2#
- 1...Bg1
- 2.Bg3#
- 1...Bg3
- 2.Bxg3#
- 1...Bf4
- 2.exf4#
- 1...c6!
- threat
- 1.Ba8?
- 1...Bh5
- 2.Re4#
- 1...Bg1
- 2.Bg3#
- 1...Bg3
- 2.Bxg3#
- 1...Bf4
- 2.exf4#
- 1...Be4
- 2.Rxe4#
- 1...Bf5
- 2.Sf7#
- 1...Bf7
- 2.Re4#
- 1...Be8
- 2.Re4#
- 1...Sa3
- 2.Qc3#
- 1...Sc3
- 2.Qxc3#
- 1...Sd4
- 2.exd4#
- 1...Sbd6
- 2.Qc3#
- 1...Sba7
- 2.Qc3#
- 1...Sb6
- 2.Rxe7#
- 1...Scd6
- 2.Rxe7#
- 1...Sca7
- 2.Rxe7#
- 1...e6
- 2.Sd7#
- 1...c6!
- 1...Bh5
- 1.Rb4?
- 1...Bh5
- 2.Re4#
- 1...Bg1
- 2.Bg3#
- 1...Bg3
- 2.Bxg3#
- 1...Bf4
- 2.exf4#
- 1...Be4
- 2.Rxe4#
- 1...Bf5
- 2.Sf7#
- 1...Bf7
- 2.Re4#
- 1...Be8
- 2.Re4#
- 1...Sa3
- 2.Qc3#
- 1...Sc3
- 2.Qxc3#
- 1...Sd4
- 2.exd4#
- 1...Sbd6
- 2.Qc3#
- 1...Sba7
- 2.Qc3#
- 1...Sb6
- 2.Rxe7#
- 1...Scd6
- 2.Rxe7#
- 1...Sca7
- 2.Rxe7#
- 1...e6
- 2.Sd7#
- 1...c6!
- 1...Bh5
- 1.Rc4?
- 1...Bh5
- 2.Re4#
- 1...Bg1
- 2.Bg3#
- 1...Bg3
- 2.Bxg3#
- 1...Bf4
- 2.exf4#
- 1...Be4
- 2.Rxe4#
- 1...Bf5
- 2.Sf7#
- 1...Bf7
- 2.Re4#
- 1...Be8
- 2.Re4#
- 1...Sa3
- 2.Qc3#
- 1...Sc3
- 2.Qxc3#
- 1...Sd4
- 2.exd4#
- 1...Sbd6
- 2.Qc3#
- 1...Sba7
- 2.Qc3#
- 1...Sb6
- 2.Rxe7#
- 1...Scd6
- 2.Rxe7#
- 1...Sca7
- 2.Rxe7#
- 1...e6
- 2.Sd7#
- 1...c6!
- 1...Bh5
- 1.Rf4?
- threat
- 2.Sg4#
- 1...Bxf4
- 2.exf4#
- 1...Bh5
- 2.Re4#
- 2.Rf5#
- 1...Bf5
- 2.Sf7#
- 2.Rxf5#
- 1...c6!
- threat
- 1.Rg4?
- 1...Bh5
- 2.Re4#
- 1...Bg1
- 2.Bg3#
- 1...Bg3
- 2.Bxg3#
- 1...Bf4
- 2.exf4#
- 1...Be4
- 2.Rxe4#
- 1...Bf5
- 2.Sf7#
- 1...Bf7
- 2.Re4#
- 1...Be8
- 2.Re4#
- 1...Sa3
- 2.Qc3#
- 1...Sc3
- 2.Qxc3#
- 1...Sd4
- 2.exd4#
- 1...Sbd6
- 2.Qc3#
- 1...Sba7
- 2.Qc3#
- 1...Sb6
- 2.Rxe7#
- 1...Scd6
- 2.Rxe7#
- 1...Sca7
- 2.Rxe7#
- 1...e6
- 2.Sd7#
- 1...c6!
- 1...Bh5
- 1.Rh4?
- 1...Bh5
- 2.Re4#
- 1...Bg1
- 2.Bg3#
- 1...Bg3
- 2.Bxg3#
- 1...Bf4
- 2.exf4#
- 1...Be4
- 2.Rxe4#
- 1...Bf5
- 2.Sf7#
- 1...Bf7
- 2.Re4#
- 1...Be8
- 2.Re4#
- 1...Sa3
- 2.Qc3#
- 1...Sc3
- 2.Qxc3#
- 1...Sd4
- 2.exd4#
- 1...Sbd6
- 2.Qc3#
- 1...Sba7
- 2.Qc3#
- 1...Sb6
- 2.Rxe7#
- 1...Scd6
- 2.Rxe7#
- 1...Sca7
- 2.Rxe7#
- 1...e6
- 2.Sd7#
- 1...c6!
- 1...Bh5
- 1.Ra6?
- threat
- 2.Sd7#
- 2.Re6#
- 1...Bf5
- 2.Sf7#
- 1...Bf7
- 2.Sd7#
- 1...Be8
- 2.Re6#
- 1...Sd4
- 2.Sd7#
- 2.exd4#
- 1...Sbd6
- 2.Qc3#
- 1...Sb6
- 2.Rxe7#
- 1...Scd6
- 2.Rxe7#
- 1...e6
- 2.Sd7#
- 2.Rxe6#
- 1...c6!
- threat
- 1.Rxg6?
- threat
- 2.Sd7#
- 2.Re4#
- 2.Re6#
- 1...hxg6
- 2.Re4#
- 1...Sc3
- 2.Sd7#
- 2.Re6#
- 2.Qxc3#
- 1...Sd4
- 2.Sd7#
- 2.exd4#
- 1...Sbd6
- 2.Sd7#
- 2.Re6#
- 2.Qc3#
- 1...Sb6
- 2.Re4#
- 2.Re6#
- 1...Scd6
- 2.Sd7#
- 2.Re6#
- 1...e6
- 2.Sd7#
- 2.Re4#
- 2.Rxe6#
- 1...c6!
- threat
- 1.Rf7?
- threat
- 2.Sg4#
- 1...Bxf7
- 2.Re4#
- 1...Bh5
- 2.Re4#
- 2.Rf5#
- 1...Bf5
- 2.Rxf5#
- 1...c6!
- threat
- 1.Qc3+?
- 1...Sd4
- 2.Qxd4#
- 1...Sxc3!
- 1...Sd4
- 1.Qxd3?
- threat
- 2.Sg4#
- 2.Qd5#
- 1...Bh5
- 2.Re4#
- 2.Qe4#
- 2.Qf5#
- 2.Qd5#
- 1...Be4
- 2.Rxe4#
- 2.Qxe4#
- 1...Bf5
- 2.Sf7#
- 2.Qxf5#
- 2.Qd5#
- 1...Bf7
- 2.Sg4#
- 2.Sxf7#
- 2.Re4#
- 2.Qe4#
- 2.Qf5#
- 1...Sc3
- 2.Sg4#
- 2.Qxc3#
- 2.Qd4#
- 1...Sd4
- 2.Sg4#
- 2.Qxd4#
- 1...Sb6
- 2.Sg4#
- 2.Rxe7#
- 1...c6
- 2.Sg4#
- 1...e6
- 2.Sg4#
- 2.Sd7#
- 1...Bxd3!
- threat
- 1.e4?
- threat
- 2.Sg4#
- 1...Bxe4
- 2.Rxe4#
- 1...Bf5
- 2.Sf7#
- 1...Bh5!
- threat
- 1.Ka1?
- Keys
- 1.Bc6!
- 1...Bh5
- 2.Re4#
- 1...Bg1
- 2.Bg3#
- 1...Bg3
- 2.Bxg3#
- 1...Bf4
- 2.exf4#
- 1...Be4
- 2.Rxe4#
- 1...Bf5
- 2.Sf7#
- 1...Bf7
- 2.Re4#
- 1...Be8
- 2.Re4#
- 1...Sa3
- 2.Qc3#
- 1...Sc3
- 2.Qxc3#
- 1...Sd4
- 2.exd4#
- 1...Sbd6
- 2.Qc3#
- 1...Sba7
- 2.Qc3#
- 1...Sb6
- 2.Rxe7#
- 1...Scd6
- 2.Rxe7#
- 1...Sca7
- 2.Rxe7#
- 1...e6
- 2.Sd7#
- 1...Bh5
- 1.Bc6!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- B(a);N_GUARD::B(C)
- B(a);N_GUARD::B(C),XB(a)
- B(a);OGATE::P(D),XB(a)
- B(e);N_GUARD::R1(E),XB(e)
- B(e);N_GUARD,SBLOCK::S(H)
- B(e);N_GUARD::R1(E)
- S(c);N_GUARD::QAB(B)
- S(c);N_GUARD::QAB(B),XS(c)
- S(c);OGATE::P(D),XS(c)
- S(i);N_GUARD::R(J),XP(g)
- P(g);SBLOCK::S(K)
- Tries
- Try
- K(A);S_FLIGHT
- Vars
- B(a);N_GUARD::B(C)
- B(a);N_GUARD::B(C),XB(a)
- B(a);OGATE::P(D),XB(a)
- B(e);N_GUARD::R1(E),XB(e)
- B(e);N_GUARD,SBLOCK::S(H)
- B(e);N_GUARD::R1(E)
- S(c);N_GUARD::QAB(B),XS(c)
- S(c);OGATE::P(D),XS(c)
- S(i);N_GUARD::R(J),XP(g)
- P(g);SBLOCK::S(K)
- Refutation
- P(f);
- Try
- K(A);S_FLIGHT
- Vars
- B(a);N_GUARD::B(C)
- B(a);N_GUARD::B(C),XB(a)
- B(a);OGATE::P(D),XB(a)
- B(e);N_GUARD::R1(E),XB(e)
- B(e);N_GUARD,SBLOCK::S(H)
- B(e);N_GUARD::R1(E)
- S(c);N_GUARD::QAB(B),XS(c)
- S(c);OGATE::P(D),XS(c)
- S(i);N_GUARD::R(J),XP(g)
- P(g);SBLOCK::S(K)
- Refutation
- P(f);
- Try
- S(H);CHECK
- Vars
- K(d);P-FLIGHT::QAB(B),XP(b)
- Refutation
- B(e);XS(H)
- Try
- S(K);CHECK,XB(e)
- Vars
- P(h);XS(K)::R1(E)
- Refutation
- K(d);P-FLIGHT
- Try
- B(C);
- Threat
- QAB(B),XB(a)
- Vars
- B(a);N_GUARD::B(C)
- B(a);N_GUARD::B(C),XB(a)
- B(a);OGATE::P(D),XB(a)
- Refutation
- P(f);
- Try
- B(C);
- Threat
- QAB(B),XB(a)
- Vars
- B(a);N_GUARD::B(C)
- B(a);N_GUARD::B(C),XB(a)
- B(a);OGATE::P(D),XB(a)
- Refutation
- P(f);
- Try
- B(I);
- Vars
- B(e);N_GUARD::R1(E)
- B(a);N_GUARD::B(C)
- B(a);N_GUARD::B(C),XB(a)
- B(a);OGATE::P(D),XB(a)
- B(e);N_GUARD::R1(E),XB(e)
- B(e);N_GUARD,SBLOCK::S(H)
- S(c);N_GUARD::QAB(B)
- S(c);N_GUARD::QAB(B),XS(c)
- S(c);OGATE::P(D),XS(c)
- S(i);N_GUARD::R(J),XP(g)
- P(g);SBLOCK::S(K)
- Refutation
- P(f);
- Try
- R(E);
- Vars
- B(e);N_GUARD::R1(E)
- B(a);N_GUARD::B(C)
- B(a);N_GUARD::B(C),XB(a)
- B(a);OGATE::P(D),XB(a)
- B(e);N_GUARD::R1(E),XB(e)
- B(e);N_GUARD,SBLOCK::S(H)
- S(c);N_GUARD::QAB(B)
- S(c);N_GUARD::QAB(B),XS(c)
- S(c);OGATE::P(D),XS(c)
- S(i);N_GUARD::R(J),XP(g)
- P(g);SBLOCK::S(K)
- Refutation
- P(f);
- Try
- R(E);
- Vars
- B(e);N_GUARD::R1(E)
- B(a);N_GUARD::B(C)
- B(a);N_GUARD::B(C),XB(a)
- B(a);OGATE::P(D),XB(a)
- B(e);N_GUARD::R1(E),XB(e)
- B(e);N_GUARD,SBLOCK::S(H)
- S(c);N_GUARD::QAB(B)
- S(c);N_GUARD::QAB(B),XS(c)
- S(c);OGATE::P(D),XS(c)
- S(i);N_GUARD::R(J),XP(g)
- P(g);SBLOCK::S(K)
- Refutation
- P(f);
- Try
- R(E);
- Threat
- S(H)
- Vars
- B(a);OGATE,XR(E)::P(D),XB(a)
- Refutation
- P(f);
- Try
- R(E);
- Vars
- B(e);N_GUARD::R1(E)
- B(a);N_GUARD::B(C)
- B(a);N_GUARD::B(C),XB(a)
- B(a);OGATE::P(D),XB(a)
- B(e);N_GUARD::R1(E),XB(e)
- B(e);N_GUARD,SBLOCK::S(H)
- S(c);N_GUARD::QAB(B)
- S(c);N_GUARD::QAB(B),XS(c)
- S(c);OGATE::P(D),XS(c)
- S(i);N_GUARD::R(J),XP(g)
- P(g);SBLOCK::S(K)
- Refutation
- P(f);
- Try
- R(E);
- Vars
- B(e);N_GUARD::R1(E)
- B(a);N_GUARD::B(C)
- B(a);N_GUARD::B(C),XB(a)
- B(a);OGATE::P(D),XB(a)
- B(e);N_GUARD::R1(E),XB(e)
- B(e);N_GUARD,SBLOCK::S(H)
- S(c);N_GUARD::QAB(B)
- S(c);N_GUARD::QAB(B),XS(c)
- S(c);OGATE::P(D),XS(c)
- S(i);N_GUARD::R(J),XP(g)
- P(g);SBLOCK::S(K)
- Refutation
- P(f);
- Try
- R(E);
- Threat
- DUALS(2)
- Vars
- B(e);N_GUARD,SBLOCK::S(H)
- B(e);::S(K)
- B(e);::R1(E)
- S(c);N_GUARD::QAB(B)
- S(i);N_GUARD::R(J),XP(g)
- Refutation
- P(f);
- Try
- R(J);XB(e)
- Threat
- DUALS(3)
- Vars
- P(h);XR(J)::R1(E)
- Refutation
- P(f);
- Try
- R(J);
- Threat
- S(H)
- Vars
- B(e);N_GUARD,XR(J)::R1(E)
- B(e);N_GUARD::R1(J),XB(e)
- Refutation
- P(f);
- Try
- Q(B);CHECK
- Vars
- S(c);N_GUARD,P_SPINS(c)::QAB1(B),XS(c)
- Refutation
- S(c);XQ(B)
- Try
- Q(B);XP(b)
- Threat
- DUALS(2)
- Vars
- P(f);::S(H)
- Refutation
- B(e);XQ(B)
- Try
- P(D);
- Threat
- S(H)
- Vars
- B(e);OGATE,XP(D)::R1(E),XB(e)
- B(e);N_GUARD::S(H)
- Refutation
- B(e);
- Try
- Actual
- B(I);
- Vars
- B(e);N_GUARD::R1(E)
- B(a);N_GUARD::B(C)
- B(a);N_GUARD::B(C),XB(a)
- B(a);OGATE::P(D),XB(a)
- B(e);N_GUARD::R1(E),XB(e)
- B(e);N_GUARD,SBLOCK::S(H)
- S(c);N_GUARD::QAB(B)
- S(c);N_GUARD::QAB(B),XS(c)
- S(c);OGATE::P(D),XS(c)
- S(i);N_GUARD::R(J),XP(g)
- P(g);SBLOCK::S(K)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).