MESON Chess Problem Database
Problem Display
PID: 15977 (4r3/3pp3/3PPpN1/3k1BN1/p2P2R1/PnR5/6PQ/7K w - - 0 1)
Bogdanov, Evgeny Mikhailovich
Die Schwalbe, 2000
#2
12 + 7
SOLUTION
- SOUND
- Sets
- 1...Ra8
- 2.Sxe7#
- 1...Rb8
- 2.Sxe7#
- 1...Rc8
- 2.Sxe7#
- 1...Rd8
- 2.Sxe7#
- 1...Rf8
- 2.Sxe7#
- 1...Rg8
- 2.Sxe7#
- 1...Rh8
- 2.Sxe7#
- 1...Sa1
- 2.Rc5#
- 1...Sc1
- 2.Rc5#
- 1...Sd2
- 2.Rc5#
- 1...Sxd4
- 2.Be4#
- 1...Sa5
- 2.Rc5#
- 1...Sc5
- 2.Rxc5#
- 1...fxg5
- 2.Qe5#
- 1...dxe6
- 2.Bxe6#
- 1...Ra8
- Tries
- 1.Kg1?
- 1...Sxd4
- 2.Be4#
- 1...fxg5
- 2.Qe5#
- 1...dxe6
- 2.Bxe6#
- 1...Sc5
- 2.Rxc5#
- 1...Ra8
- 2.Sxe7#
- 1...Rb8
- 2.Sxe7#
- 1...Rc8
- 2.Sxe7#
- 1...Rd8
- 2.Sxe7#
- 1...Rf8
- 2.Sxe7#
- 1...Rg8
- 2.Sxe7#
- 1...Rh8
- 2.Sxe7#
- 1...Sa1
- 2.Rc5#
- 1...Sc1
- 2.Rc5#
- 1...Sd2
- 2.Rc5#
- 1...Sa5
- 2.Rc5#
- 1...exd6!
- 1...Sxd4
- 1.Sf7?
- 1...Sxd4
- 2.Sf4#
- 1...exd6
- 2.Qxd6#
- 1...Sc5
- 2.Rxc5#
- 1...Ra8
- 2.Sxe7#
- 1...Rb8
- 2.Sxe7#
- 1...Rc8
- 2.Sxe7#
- 1...Rd8
- 2.Sxe7#
- 1...Rf8
- 2.Sxe7#
- 1...Rg8
- 2.Sxe7#
- 1...Rh8
- 2.Sxe7#
- 1...Sa1
- 2.Rc5#
- 1...Sc1
- 2.Rc5#
- 1...Sd2
- 2.Rc5#
- 1...Sa5
- 2.Rc5#
- 1...dxe6!
- 1...Sxd4
- 1.Sf4+?
- 1...Kxd6
- 2.Se4#
- 2.Sf7#
- 1...Kxd4!
- 1...Kxd6
- 1.Rc2?
- 1...Sxd4
- 2.Be4#
- 1...fxg5
- 2.Qe5#
- 1...dxe6
- 2.Bxe6#
- 1...Sc5
- 2.Rxc5#
- 1...Ra8
- 2.Sxe7#
- 1...Rb8
- 2.Sxe7#
- 1...Rc8
- 2.Sxe7#
- 1...Rd8
- 2.Sxe7#
- 1...Rf8
- 2.Sxe7#
- 1...Rg8
- 2.Sxe7#
- 1...Rh8
- 2.Sxe7#
- 1...Sa1
- 2.Rc5#
- 1...Sc1
- 2.Rc5#
- 1...Sd2
- 2.Rc5#
- 1...Sa5
- 2.Rc5#
- 1...exd6!
- 1...Sxd4
- 1.Rc7?
- 1...Sxd4
- 2.Be4#
- 1...fxg5
- 2.Qe5#
- 1...dxe6
- 2.Bxe6#
- 1...Sc5
- 2.Rxc5#
- 1...Ra8
- 2.Sxe7#
- 1...Rb8
- 2.Sxe7#
- 1...Rc8
- 2.Sxe7#
- 1...Rd8
- 2.Sxe7#
- 1...Rf8
- 2.Sxe7#
- 1...Rg8
- 2.Sxe7#
- 1...Rh8
- 2.Sxe7#
- 1...Sa1
- 2.Rc5#
- 1...Sc1
- 2.Rc5#
- 1...Sd2
- 2.Rc5#
- 1...Sa5
- 2.Rc5#
- 1...exd6!
- 1...Sxd4
- 1.Re4?
- 1...fxg5
- 2.Qe5#
- 1...dxe6
- 2.Bxe6#
- 1...exd6
- 2.Sf4#
- 1...Sc5
- 2.Rxc5#
- 1...Ra8
- 2.Sxe7#
- 1...Rb8
- 2.Sxe7#
- 1...Rc8
- 2.Sxe7#
- 1...Rd8
- 2.Sxe7#
- 1...Rf8
- 2.Sxe7#
- 1...Rg8
- 2.Sxe7#
- 1...Rh8
- 2.Sxe7#
- 1...Sa1
- 2.Rc5#
- 1...Sc1
- 2.Rc5#
- 1...Sd2
- 2.Rc5#
- 1...Sa5
- 2.Rc5#
- 1...Sxd4!
- 1...fxg5
- 1.Rh4?
- 1...Sxd4
- 2.Be4#
- 1...fxg5
- 2.Qe5#
- 1...dxe6
- 2.Bxe6#
- 1...Sc5
- 2.Rxc5#
- 1...Ra8
- 2.Sxe7#
- 1...Rb8
- 2.Sxe7#
- 1...Rc8
- 2.Sxe7#
- 1...Rd8
- 2.Sxe7#
- 1...Rf8
- 2.Sxe7#
- 1...Rg8
- 2.Sxe7#
- 1...Rh8
- 2.Sxe7#
- 1...Sa1
- 2.Rc5#
- 1...Sc1
- 2.Rc5#
- 1...Sd2
- 2.Rc5#
- 1...Sa5
- 2.Rc5#
- 1...exd6!
- 1...Sxd4
- 1.Qg3?
- 1...Sxd4
- 2.Be4#
- 1...fxg5
- 2.Qe5#
- 1...dxe6
- 2.Bxe6#
- 1...exd6
- 2.Qf3#
- 1...Sc5
- 2.Rxc5#
- 1...Ra8
- 2.Sxe7#
- 1...Rb8
- 2.Sxe7#
- 1...Rc8
- 2.Sxe7#
- 1...Rd8
- 2.Sxe7#
- 1...Rf8
- 2.Sxe7#
- 1...Rg8
- 2.Sxe7#
- 1...Sa1
- 2.Rc5#
- 1...Sc1
- 2.Rc5#
- 1...Sd2
- 2.Rc5#
- 1...Sa5
- 2.Rc5#
- 1...Rh8+!
- 1...Sxd4
- 1.Qf4?
- 1...Sxd4
- 2.Be4#
- 2.Qxd4#
- 1...fxg5
- 2.Qe5#
- 1...dxe6
- 2.Bxe6#
- 1...exd6
- 2.Qf3#
- 2.Qe4#
- 1...Sc5
- 2.Rxc5#
- 1...Ra8
- 2.Sxe7#
- 1...Rb8
- 2.Sxe7#
- 1...Rc8
- 2.Sxe7#
- 1...Rd8
- 2.Sxe7#
- 1...Rf8
- 2.Sxe7#
- 1...Rg8
- 2.Sxe7#
- 1...Sa1
- 2.Rc5#
- 1...Sc1
- 2.Rc5#
- 1...Sd2
- 2.Rc5#
- 1...Sa5
- 2.Rc5#
- 1...Rh8+!
- 1...Sxd4
- 1.Kg1?
- Keys
- 1.Sf3!
- 1...Sxd4
- 2.Rxd4#
- 1...dxe6
- 2.Be4#
- 1...exd6
- 2.Sf4#
- 1...Sc5
- 2.Rxc5#
- 1...Ra8
- 2.Sxe7#
- 1...Rb8
- 2.Sxe7#
- 1...Rc8
- 2.Sxe7#
- 1...Rd8
- 2.Sxe7#
- 1...Rf8
- 2.Sxe7#
- 1...Rg8
- 2.Sxe7#
- 1...Rh8
- 2.Sxe7#
- 1...Sa1
- 2.Rc5#
- 1...Sc1
- 2.Rc5#
- 1...Sd2
- 2.Rc5#
- 1...Sa5
- 2.Rc5#
- 1...Sxd4
- 1.Sf3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 1
- Sets
- R(g);N_GUARD::S(L),XP(f)
- R(g);N_GUARD,P_PINQ(C)::S(L),XP(f)
- S(a);N_GUARD::R1(E)
- S(a);SBLOCK,XP(F)::B(H)
- S(a);N_GUARD::R1(E),XS(a)
- P(d);N_GUARD,XS(I)::QAR1(C)
- P(e);OGATE,XP(K)::B(H),XP(e)
- Tries
- Try
- K(A);P-FLIGHT
- Vars
- S(a);SBLOCK,XP(F)::B(H)
- P(d);N_GUARD,XS(I)::QAR1(C)
- P(e);OGATE,XP(K)::B(H),XP(e)
- S(a);N_GUARD::R1(E),XS(a)
- R(g);N_GUARD::S(L),XP(f)
- S(a);N_GUARD::R1(E)
- Refutation
- P(f);XP(J)
- Try
- S(I);
- Vars
- S(a);SBLOCK,XP(F)::S(L)
- P(f);OGATE,XP(J)::QAR1(C),XP(f)
- S(a);N_GUARD::R1(E),XS(a)
- R(g);N_GUARD::S(L),XP(f)
- R(g);N_GUARD,P_PINQ(C)::S(L),XP(f)
- S(a);N_GUARD::R1(E)
- Refutation
- P(e);XP(K)
- Try
- S(L);CHECK
- Refutation
- K(c);P-FLIGHT,XP(F)
- Try
- R(E);
- Vars
- S(a);SBLOCK,XP(F)::B(H)
- P(d);N_GUARD,XS(I)::QAR1(C)
- P(e);OGATE,XP(K)::B(H),XP(e)
- S(a);N_GUARD::R1(E),XS(a)
- R(g);N_GUARD::S(L),XP(f)
- R(g);N_GUARD,P_PINQ(C)::S(L),XP(f)
- S(a);N_GUARD::R1(E)
- Refutation
- P(f);XP(J)
- Try
- R(E);
- Vars
- S(a);SBLOCK,XP(F)::B(H)
- P(d);N_GUARD,XS(I)::QAR1(C)
- P(e);OGATE,XP(K)::B(H),XP(e)
- S(a);N_GUARD::R1(E),XS(a)
- R(g);N_GUARD::S(L),XP(f)
- R(g);N_GUARD,P_PINQ(C)::S(L),XP(f)
- S(a);N_GUARD::R1(E)
- Refutation
- P(f);XP(J)
- Try
- R(G);
- Vars
- P(d);N_GUARD,XS(I)::QAR1(C)
- P(e);OGATE,XP(K)::B(H),XP(e)
- P(f);SBLOCK,XP(J)::S(L)
- S(a);N_GUARD::R1(E),XS(a)
- R(g);N_GUARD::S(L),XP(f)
- R(g);N_GUARD,P_PINQ(C)::S(L),XP(f)
- S(a);N_GUARD::R1(E)
- Refutation
- S(a);XP(F)
- Try
- R(G);
- Vars
- S(a);SBLOCK,XP(F)::B(H)
- P(d);N_GUARD,XS(I)::QAR1(C)
- P(e);OGATE,XP(K)::B(H),XP(e)
- S(a);N_GUARD::R1(E),XS(a)
- R(g);N_GUARD::S(L),XP(f)
- S(a);N_GUARD::R1(E)
- Refutation
- P(f);XP(J)
- Try
- Q(C);
- Vars
- S(a);SBLOCK,XP(F)::B(H)
- P(d);N_GUARD,XS(I)::QAR1(C)
- P(e);OGATE,XP(K)::B(H),XP(e)
- P(f);SBLOCK,XP(J)::QAB(C)
- S(a);N_GUARD::R1(E),XS(a)
- R(g);N_GUARD::S(L),XP(f)
- S(a);N_GUARD::R1(E)
- Refutation
- R(g);CHECK
- Try
- Q(C);
- Vars
- P(d);N_GUARD,XS(I)::QAR1(C)
- P(e);OGATE,XP(K)::B(H),XP(e)
- S(a);N_GUARD::R1(E),XS(a)
- R(g);N_GUARD::S(L),XP(f)
- S(a);N_GUARD::R1(E)
- Refutation
- R(g);CHECK
- Try
- Actual
- S(I);
- Vars
- S(a);OGATE,XP(F)::R1(G),XS(a)
- P(e);SBLOCK,XP(K)::B(H)
- P(f);SBLOCK,XP(J)::S(L)
- S(a);N_GUARD::R1(E),XS(a)
- R(g);N_GUARD::S(L),XP(f)
- R(g);N_GUARD,P_PINQ(C)::S(L),XP(f)
- S(a);N_GUARD::R1(E)
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).