MESON Chess Problem Database
Problem Display
PID: 11758 (2R4q/p1pp4/2k1N3/2P1b2r/KpQ1Np2/7p/4B3/8 w - - 0 1)
Gulyaev, Aleksandr Pavlovich (aka Grin, AP)
Shakhmatny, 1971
#2
7 + 10
SOLUTION
- SOUND
- Sets
- 1...Kb7
- 2.Qa6#
- 1...Qg7
- 2.Sd8#
- 1...Qh6
- 2.Sd8#
- 1...Qh7
- 2.Sd8#
- 1...Qd8
- 2.Sxd8#
- 1...Ba1
- 2.Rxc7#
- 1...Bb2
- 2.Rxc7#
- 1...Bc3
- 2.Rxc7#
- 1...Bd4
- 2.Rxc7#
- 1...Bf6
- 2.Rxc7#
- 1...Bg7
- 2.Rxc7#
- 1...d5
- 2.Qb5#
- 1...d6
- 2.Rxc7#
- 1...Kb7
- Tries
- 1.Sc3?
- threat
- 2.Qb5#
- 2.Qd5#
- 2.Qa6#
- 1...Kb7
- 2.Qa6#
- 1...Qxc8
- 2.Qb5#
- 2.Qd5#
- 1...Bxc3
- 2.Rxc7#
- 1...dxe6
- 2.Qb5#
- 1...d5
- 2.Qb5#
- 2.Qxd5#
- 1...d6
- 2.Rxc7#
- 2.Qb5#
- 1...Bd4
- 2.Rxc7#
- 2.Qb5#
- 2.Qa6#
- 1...Bd6
- 2.Qb5#
- 2.Qa6#
- 1...Bf6
- 2.Rxc7#
- 2.Qb5#
- 2.Qa6#
- 1...Bg7
- 2.Rxc7#
- 2.Qb5#
- 2.Qa6#
- 1...a6
- 2.Qd5#
- 2.Qxa6#
- 1...bxc3!
- threat
- 1.Sf6?
- threat
- 2.Qb5#
- 2.Qd5#
- 2.Qa6#
- 1...Kb7
- 2.Qa6#
- 1...Qxc8
- 2.Qb5#
- 2.Qd5#
- 1...Bxf6
- 2.Rxc7#
- 1...dxe6
- 2.Bf3#
- 2.Qb5#
- 1...Ba1
- 2.Rxc7#
- 2.Qb5#
- 2.Qa6#
- 1...Bb2
- 2.Rxc7#
- 2.Qb5#
- 2.Qa6#
- 1...Bc3
- 2.Rxc7#
- 2.Qb5#
- 2.Qa6#
- 1...Bd4
- 2.Rxc7#
- 2.Qb5#
- 2.Qa6#
- 1...Bd6
- 2.Qb5#
- 2.Qa6#
- 1...a6
- 2.Qd5#
- 2.Qxa6#
- 1...d5
- 2.Qb5#
- 2.Qxd5#
- 2.Qa6#
- 1...Qxf6!
- threat
- 1.Sd4+?
- 1...Kb7
- 2.Qa6#
- 1...Bxd4!
- 1...Kb7
- 1.Sxf4?
- threat
- 2.Qb5#
- 2.Qd5#
- 2.Qa6#
- 1...Kb7
- 2.Qa6#
- 1...Qxc8
- 2.Qb5#
- 2.Qd5#
- 1...d5
- 2.Qb5#
- 2.Qxd5#
- 1...d6
- 2.Qb5#
- 1...Qg8
- 2.Qb5#
- 2.Qa6#
- 1...Ba1
- 2.Qb5#
- 2.Qa6#
- 1...Bb2
- 2.Qb5#
- 2.Qa6#
- 1...Bc3
- 2.Qb5#
- 2.Qa6#
- 1...Bd4
- 2.Qb5#
- 2.Qa6#
- 1...Bd6
- 2.Qb5#
- 2.Qa6#
- 1...Bf6
- 2.Qb5#
- 2.Qa6#
- 1...Bg7
- 2.Qb5#
- 2.Qa6#
- 1...a6
- 2.Qd5#
- 2.Qxa6#
- 1...Bxf4!
- threat
- 1.Sc3?
- Keys
- 1.Bf3!
- threat
- 2.Sd6#
- 1...Kb7
- 2.Sd6#
- 1...dxe6
- 2.Sf6#
- 1...d5
- 2.Qb5#
- 1...d6
- 2.Rxc7#
- 1...Qh7
- 2.Sd8#
- 1...Ba1
- 2.Rxc7#
- 1...Bb2
- 2.Rxc7#
- 1...Bc3
- 2.Rxc7#
- 1...Bd4
- 2.Rxc7#
- 1...Bd6
- 2.S4g5#
- 1...Bf6
- 2.Rxc7#
- 1...Bg7
- 2.Rxc7#
- threat
- 1.Bf3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 3
- Sets
- K(f);N_SPINP(h),S_FLIGHT::QAB1(C)
- Q(j);N_GUARD::S(F)
- Q(j);N_GUARD::S(F),XQ(j)
- B(d);N_GUARD::R1(G),XP(h)
- P(i);SBLOCK::QAB1(C)
- P(i);S_CUTB(d)::R1(G),XP(h)
- Tries
- Try
- S(D);
- Threat
- DUALS(3)
- Vars
- K(f);N_SPINP(h),S_FLIGHT::QAB1(C)
- B(d);N_GUARD,XS(D)::R1(G),XP(h)
- P(i);XS(F)::QAB1(C)
- Refutation
- P(b);XS(D)
- Try
- S(D);
- Threat
- DUALS(3)
- Vars
- K(f);N_SPINP(h),S_FLIGHT::QAB1(C)
- B(d);N_GUARD,XS(D)::R1(G),XP(h)
- Refutation
- Q(j);XS(D)
- Try
- S(F);CHECK
- Vars
- K(f);N_SPINP(h),S_FLIGHT::QAB1(C)
- Refutation
- B(d);XS(F)
- Try
- S(F);XP(c)
- Threat
- DUALS(3)
- Vars
- K(f);N_SPINP(h),S_FLIGHT::QAB1(C)
- P(i);::QAB1(C)
- Refutation
- B(d);XS(F)
- Try
- Actual
- B(A);
- Threat
- B(A)+S(D)
- Vars
- K(f);N_SPINP(h),S_FLIGHT::B(A)+S(D),DCHECK
- P(i);N_GUARD,XS(F)::B(A)+S(D)
- P(i);SBLOCK::QAB1(C)
- P(i);S_CUTB(d)::R1(G),XP(h)
- Q(j);N_GUARD::S(F)
- B(d);N_GUARD::R1(G),XP(h)
- B(d);S_CUTP(i)::B(A)+S(D)
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).