MESON Chess Problem Database
Problem Display
PID: 230149 (3NR3/1p3n2/6p1/R5p1/4PkN1/B1n4K/1Qb2bP1/r1rB4 w - - 0 1)
Borisenko, Alexey Ivanovich
Zadachi i Etyudi, 2000
#2
10 + 10
SOLUTION
- SOUND
- Sets
- 1...Bb1
- 2.Qxf2#
- 1...Bb3
- 2.Qxf2#
- 1...Bd3
- 2.Qxf2#
- 1...Ba4
- 2.Qxf2#
- 1...Bxe4
- 2.Se6#
- 1...Bg1
- 2.g3#
- 1...Be3
- 2.g3#
- 1...Bd4
- 2.g3#
- 1...Bc5
- 2.g3#
- 1...Bb6
- 2.g3#
- 1...Ba7
- 2.g3#
- 1...Sb1
- 2.Qf6#
- 1...Sxd1
- 2.Qf6#
- 1...Sa2
- 2.Qf6#
- 1...Se2
- 2.Qf6#
- 1...Sa4
- 2.Qf6#
- 1...Sxe4
- 2.Se6#
- 1...Sb5
- 2.Qf6#
- 1...Sd6
- 2.Bxd6#
- 1...Sh6
- 2.Bd6#
- 1...Sxd8
- 2.Bd6#
- 1...Sh8
- 2.Bd6#
- 1...Bb1
- Tries
- 1.Qxc1+?
- 1...Be3
- 2.Qxe3#
- 2.g3#
- 1...Rxc1!
- 1...Be3
- 1.Qxc3?
- threat
- 2.Qf6#
- 2.Qf3#
- 1...Bxd1
- 2.Qf6#
- 1...Bxe4
- 2.Se6#
- 1...Se5
- 2.Qxe5#
- 1...Bd3
- 2.Qf6#
- 1...Be3
- 2.Qf6#
- 2.Qxe3#
- 2.g3#
- 1...Bd4
- 2.Qf3#
- 2.Qg3#
- 2.g3#
- 1...Sd6
- 2.Bxd6#
- 2.Qe5#
- 2.Qf3#
- 1...Sh6
- 2.Bd6#
- 2.Qe5#
- 2.Qf3#
- 2.Qc7#
- 1...Rxa3!
- threat
- 1.Qxc2?
- threat
- 2.Se6#
- 2.Qxf2#
- 1...Sxd1
- 2.Se6#
- 1...Sxe4
- 2.Se6#
- 2.Rxe4#
- 2.Qxe4#
- 1...Sxd8
- 2.Bd6#
- 2.Qxf2#
- 1...Ra2
- 2.Se6#
- 1...Be1
- 2.Se6#
- 1...Bg1
- 2.Se6#
- 2.g3#
- 1...Be3
- 2.Se6#
- 2.g3#
- 1...Bg3
- 2.Se6#
- 2.Qd2#
- 1...Bd4
- 2.Se6#
- 2.g3#
- 1...Bh4
- 2.Se6#
- 2.Qd2#
- 1...Bc5
- 2.Se6#
- 2.g3#
- 1...Bb6
- 2.Se6#
- 2.g3#
- 1...Ba7
- 2.Se6#
- 2.g3#
- 1...Se2
- 2.Se6#
- 1...Se5
- 2.Se6#
- 1...Rxc2!
- threat
- 1.Qb4?
- threat
- 2.Se6#
- 1...Sxd8
- 2.Qd6#
- 1...Bd4
- 2.g3#
- 1...Bb3!
- threat
- 1.Qb6?
- threat
- 2.Qxf2#
- 2.Qf6#
- 1...Bxd1
- 2.Qf6#
- 1...Bxe4
- 2.Se6#
- 1...Bxb6
- 2.g3#
- 1...Sxd1
- 2.Qf6#
- 1...Sxe4
- 2.Se6#
- 1...Be1
- 2.Qe3#
- 2.Qf6#
- 1...Bg1
- 2.Qf6#
- 2.g3#
- 1...Be3
- 2.Qxe3#
- 2.Qf6#
- 2.g3#
- 1...Bg3
- 2.Qe3#
- 2.Qf6#
- 1...Bd4
- 2.g3#
- 1...Bh4
- 2.Qe3#
- 2.Qf6#
- 1...Bc5
- 2.Qf6#
- 2.g3#
- 1...Sd5
- 2.Qxf2#
- 1...Sd6
- 2.Bxd6#
- 2.Qxf2#
- 2.Qxd6#
- 1...Sh6
- 2.Bd6#
- 2.Qxf2#
- 2.Qc7#
- 2.Qd6#
- 1...Se5!
- threat
- 1.Qxc1+?
- Keys
- 1.Ra4!
- threat
- 2.Se6#
- 1...Bxa4
- 2.Qxf2#
- 1...Bxe4
- 2.Qxf2#
- 1...Sxa4
- 2.Qf6#
- 1...Sxe4
- 2.Qf6#
- 1...Sxd8
- 2.Bd6#
- 1...Bb3
- 2.Qxf2#
- 1...Bd4
- 2.g3#
- threat
- 1.Ra4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 0
- REMOVED MATES = 15
- Sets
- B(c);OGATE::QAR2(B),XB(d)
- B(c);SBLOCK,XP(F)::S(I)
- B(d);N_GUARD::P(C)
- S(e);OGATE::QAR2(B)
- S(e);OGATE,XB(A)::QAR2(B)
- S(e);SBLOCK,XP(F)::S(I)
- S(j);N_GUARD::B(D),XS(j)
- S(j);N_GUARD::B(D)
- S(j);N_GUARD,XS(I)::B(D)
- Tries
- Try
- Q(B);CHECK,XR(b)
- Refutation
- R(a);XQ(B)
- Try
- Q(B);XS(e)
- Threat
- DUALS(2)
- Vars
- B(c);XB(A)::QAR2(B)
- B(c);SBLOCK,XP(F)::S(I)
- S(j);N_GUARD::QAB1(B),XS(j)
- B(c);::QAR2(B)
- Refutation
- R(a);P_PINQ(B),XB(D)
- Try
- Q(B);XB(c)
- Threat
- DUALS(2)
- Vars
- S(e);XB(A)::S(I)
- R(a);::S(I)
- B(d);::S(I)
- S(e);::S(I)
- S(j);::S(I)
- Refutation
- R(b);XQ(B)
- Try
- Q(B);
- Threat
- S(I)
- Vars
- S(j);N_GUARD,XS(I)::QAB(B)
- B(d);N_GUARD::P(C)
- Refutation
- B(c);
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- B(c);XB(A)::QAR2(B)
- B(c);SBLOCK,XP(F)::S(I)
- B(d);N_GUARD,XQ(B)::P(C)
- S(e);XB(A)::QAR2(B)
- S(e);SBLOCK,XP(F)::S(I)
- B(d);N_GUARD::P(C)
- S(e);::QAR2(B),XB(d)
- Refutation
- S(j);
- Try
- Actual
- R(H);
- Threat
- S(I)
- Vars
- B(c);OGATE,XR(H)::QAR2(B),XB(d)
- B(c);OGATE,P_SPINB(c),XP(F)::QAR2(B),XB(d)
- S(e);OGATE,XR(H)::QAR2(B)
- S(e);OGATE,P_SPINS(e),XP(F)::QAR2(B)
- S(j);N_GUARD,XS(I)::B(D)
- B(c);OGATE::QAR2(B),XB(d)
- B(d);N_GUARD::P(C)
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).