MESON Chess Problem Database
Problem Display
PID: 61303 (4r3/1n2p1P1/1b3P2/4N2R/QnP1k1K1/6R1/2N3p1/1B6 w - - 0 1)
Markovtsy, Vassyl Yuriovich
Problem Observer, 2005
#2
10 + 7
SOLUTION
- SOUND
- Sets
- 1...Be3
- 2.Rxe3#
- 1...Bd4
- 2.Sxb4#
- 1...Ba5
- 2.Re3#
- 1...Bc7
- 2.Re3#
- 1...Bd8
- 2.Re3#
- 1...Sa2
- 2.Qc6#
- 1...Sd3
- 2.Qc6#
- 1...Sa6
- 2.Qc6#
- 1...Sc6
- 2.Qxc6#
- 1...Sc5
- 2.Re3#
- 1...Be3
- Tries
- 1.Se3+?
- 1...Sc2
- 2.c5#
- 1...Sd3
- 2.c5#
- 1...Kd4!
- 1...Sc2
- 1.Sc6?
- threat
- 2.S2xb4#
- 2.Re5#
- 1...Sxc2
- 2.Bxc2#
- 2.Re5#
- 2.Qxc2#
- 2.c5#
- 1...Sxc6
- 2.Qxc6#
- 1...exf6
- 2.S2xb4#
- 1...Be3
- 2.S2xb4#
- 2.Rxe3#
- 1...g1Q
- 2.Re5#
- 1...g1R
- 2.Re5#
- 1...Rd8
- 2.Re5#
- 1...Bd4
- 2.S2xb4#
- 1...Bc7
- 2.S2xb4#
- 2.Re3#
- 1...Sa2
- 2.Sa1#
- 2.Se1#
- 2.Sa3#
- 2.Se3#
- 2.S2b4#
- 2.S2d4#
- 2.Re5#
- 1...Sd5
- 2.Sa1#
- 2.Se1#
- 2.Sa3#
- 2.Se3#
- 2.S2b4#
- 2.S2d4#
- 2.Re5#
- 1...Sa6
- 2.Sa1#
- 2.Se1#
- 2.Sa3#
- 2.Se3#
- 2.S2b4#
- 2.S2d4#
- 2.Re5#
- 1...Sc5
- 2.Re3#
- 2.Re5#
- 1...e5
- 2.S2xb4#
- 1...Sd3!
- threat
- 1.Sg6?
- threat
- 2.Re5#
- 1...Sxc2
- 2.c5#
- 1...exf6
- 2.Qxe8#
- 1...Be3
- 2.Rxe3#
- 1...Bd4
- 2.Sxb4#
- 1...Bc7
- 2.Re3#
- 1...Sd3
- 2.Qc6#
- 1...Sc6
- 2.Qxc6#
- 1...e5!
- threat
- 1.Sd7?
- threat
- 2.Re5#
- 1...Sxc2
- 2.c5#
- 1...exf6
- 2.Sxf6#
- 1...Be3
- 2.Rxe3#
- 1...Bd4
- 2.Sxb4#
- 1...Bc7
- 2.Re3#
- 1...Sd3
- 2.Qc6#
- 1...Sc6
- 2.Qxc6#
- 1...e5!
- threat
- 1.Qb3?
- threat
- 2.Qf3#
- 1...Sxc2
- 2.Qd3#
- 1...Be3
- 2.Rxe3#
- 2.Qxe3#
- 1...Sd3
- 2.Qxd3#
- 1...g1S!
- threat
- 1.Qc6+?
- 1...Sd5
- 2.Qxd5#
- 1...Sxc6!
- 1...Sd5
- 1.Qd7?
- threat
- 2.Sxb4#
- 2.Qf5#
- 1...Sxc2
- 2.Bxc2#
- 2.Qd3#
- 2.Qd5#
- 1...g1Q
- 2.Qf5#
- 1...g1R
- 2.Qf5#
- 1...Sa2
- 2.Sa1#
- 2.Se1#
- 2.Sa3#
- 2.Se3#
- 2.Sb4#
- 2.Sd4#
- 2.Qf5#
- 2.Qc6#
- 2.Qd3#
- 2.Qd5#
- 2.Qxb7#
- 1...Sd3
- 2.Qf5#
- 2.Qc6#
- 2.Qxd3#
- 2.Qd5#
- 2.Qxb7#
- 1...Sd5
- 2.Qf5#
- 2.Qxd5#
- 1...Sa6
- 2.Sa1#
- 2.Se1#
- 2.Sa3#
- 2.Se3#
- 2.Sb4#
- 2.Sd4#
- 2.Qf5#
- 2.Qc6#
- 2.Qd3#
- 2.Qd5#
- 2.Qxb7#
- 1...Sc6
- 2.Sa1#
- 2.Se1#
- 2.Sa3#
- 2.Se3#
- 2.Sb4#
- 2.Sd4#
- 2.Qf5#
- 2.Qxc6#
- 2.Qd3#
- 2.Qd5#
- 1...Sc5
- 2.Re3#
- 2.Qf5#
- 2.Qd4#
- 1...e6
- 2.Sxb4#
- 1...Sd6!
- threat
- 1.Qa3?
- threat
- 2.Qf3#
- 1...Sxc2
- 2.Qd3#
- 1...Be3
- 2.Rxe3#
- 2.Qxe3#
- 1...Sd3
- 2.Qxd3#
- 1...g1S!
- threat
- 1.Se3+?
- Keys
- 1.Sf7!
- threat
- 2.Re5#
- 1...Sxc2
- 2.c5#
- 1...exf6
- 2.Qxe8#
- 1...Be3
- 2.Rxe3#
- 1...Bd4
- 2.Sxb4#
- 1...Bc7
- 2.Re3#
- 1...Sd3
- 2.Qc6#
- 1...Sc6
- 2.Qxc6#
- 1...e5
- 2.Sg5#
- threat
- 1.Sf7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 5
- Sets
- B(d);N_GUARD::R1(C),XB(d)
- B(d);SBLOCK::B(A)+S(B),XS(b)
- B(d);N_GUARD::R1(C)
- S(b);N_GUARD::QAB(D)
- S(b);N_GUARD::QAB(D),XS(b)
- S(e);S_CUTB(d)::R1(C)
- Tries
- Try
- S(B);CHECK
- Vars
- S(b);P_SPINS(b)::QAR(D)+P(E)
- Refutation
- K(c);P-FLIGHT
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- S(b);OGATE,XS(G)::QAB(D),XS(b)
- P(f);XP(I)::B(A)+S(B),XS(b)
- P(a);P_PINR(C)::R1(H)
- R(g);::R1(H)
- B(d);::B(A)+S(B),XS(b)
- P(f);::B(A)+S(B),XS(b)
- Refutation
- S(b);
- Try
- S(G);
- Threat
- R1(H)
- Vars
- S(b);P_SPINS(b),XS(B)::QAR(D)+P(E)
- P(f);OGATEB,XP(I)::QAR(D),XR(g)
- B(d);N_GUARD::R1(C),XB(d)
- B(d);SBLOCK::B(A)+S(B),XS(b)
- B(d);N_GUARD::R1(C)
- S(b);N_GUARD::QAB(D)
- S(b);N_GUARD::QAB(D),XS(b)
- Refutation
- P(f);
- Try
- S(G);
- Threat
- R1(H)
- Vars
- S(b);P_SPINS(b),XS(B)::QAR(D)+P(E)
- P(f);XP(I)::S(G),XP(f)
- B(d);N_GUARD::R1(C),XB(d)
- B(d);SBLOCK::B(A)+S(B),XS(b)
- B(d);N_GUARD::R1(C)
- S(b);N_GUARD::QAB(D)
- S(b);N_GUARD::QAB(D),XS(b)
- Refutation
- P(f);
- Try
- Q(D);
- Threat
- QAB1(D)
- Vars
- S(b);N_GUARD,P_SPINS(b),XS(B)::QAB1(D)
- S(b);N_GUARD::QAB1(D),XS(b)
- Refutation
- P(a);
- Try
- Q(D);CHECK
- Vars
- S(b);N_GUARD,P_SPINS(b)::QAB1(D),XS(b)
- Refutation
- S(b);XQ(D)
- Try
- Q(D);
- Threat
- DUALS(2)
- Vars
- P(a);P_PINR(C)::QAB1(D)
- P(f);::B(A)+S(B),XS(b)
- Refutation
- S(e);
- Try
- Q(D);
- Threat
- QAB1(D)
- Vars
- S(b);N_GUARD,P_SPINS(b),XS(B)::QAB1(D)
- S(b);N_GUARD::QAB1(D),XS(b)
- Refutation
- P(a);
- Try
- Actual
- S(G);
- Threat
- R1(H)
- Vars
- S(b);P_SPINS(b),XS(B)::QAR(D)+P(E)
- P(f);OGATEB,XP(I)::QAR(D),XR(g)
- B(d);N_GUARD::R1(C),XB(d)
- B(d);SBLOCK::B(A)+S(B),XS(b)
- B(d);N_GUARD::R1(C)
- S(b);N_GUARD::QAB(D)
- S(b);N_GUARD::QAB(D),XS(b)
- P(f);SBLOCK::S(G)
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).