MESON Chess Problem Database
Problem Display
PID: 55728 (8/4p2B/1p2P1n1/pQ2pPP1/Rn1Nkp2/2R1pN1K/1P6/6B1 w - - 0 1)
Chepizhni, Viktor Ivanovich
2nd Prize, Sportowiec, 1962
#2
12 + 9
| 3747 | FIDE Album (1962-1964) | 1968 |
| 6167 | Viktor Chepizhny | 2007 |
| 56 | The Problemist | 2011 |
| 136 | Problem Observer | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Sa2
- 2.Qc6#
- 1...Sc2
- 2.Qc6#
- 1...Sd3
- 2.Qc6#
- 1...Sd5
- 2.Qd3#
- 1...Sa6
- 2.Qc6#
- 1...Sc6
- 2.Qxc6#
- 1...Sh4
- 2.Qxe5#
- 1...Sf8
- 2.Qxe5#
- 1...Sh8
- 2.Qxe5#
- 1...e2
- 2.Sd2#
- 1...Sa2
- Tries
- 1.Kh2?
- 1...Sa2
- 2.Qc6#
- 1...Sc2
- 2.Qc6#
- 1...Sd3
- 2.Qc6#
- 1...Sd5
- 2.Qd3#
- 1...Sa6
- 2.Qc6#
- 1...Sc6
- 2.Qxc6#
- 1...Sh4
- 2.Qxe5#
- 1...Sf8
- 2.Qxe5#
- 1...Sh8
- 2.Qxe5#
- 1...e2
- 2.Sd2#
- 1...exd4!
- 1...Sa2
- 1.Kg4?
- 1...Sa2
- 2.Qc6#
- 1...Sc2
- 2.Sxc2#
- 2.Qc6#
- 1...Sd3
- 2.Qc6#
- 1...Sd5
- 2.Qd3#
- 1...Sa6
- 2.Qc6#
- 1...Sc6
- 2.Sxc6#
- 2.Qxc6#
- 1...Sh4
- 2.Qxe5#
- 1...Sf8
- 2.Qxe5#
- 1...Sh8
- 2.Qxe5#
- 1...e2
- 2.Sd2#
- 1...exd4!
- 1...Sa2
- 1.Sd2+?
- 1...Kxd4
- 2.Rd3#
- 2.Qd3#
- 2.Qc4#
- 2.Qd7#
- 1...exd2!
- 1...Kxd4
- 1.Sc2?
- 1...Kxf5
- 2.Qxe5#
- 1...Sh4
- 2.Qc6#
- 1...Sf8
- 2.Qc6#
- 1...Sh8
- 2.Qc6#
- 1...e2
- 2.Qd3#
- 1...Kxf3!
- 1...Kxf5
- 1.Se2?
- 1...Kxf5
- 2.Qxe5#
- 1...Sh4
- 2.Qc6#
- 1...Sf8
- 2.Qc6#
- 1...Sh8
- 2.Qc6#
- 1...Kxf3!
- 1...Kxf5
- 1.Bxg6?
- threat
- 2.Qxe5#
- 2.f6#
- 1...Sd3
- 2.Qc6#
- 2.f6#
- 1...Sd5
- 2.Qd3#
- 2.f6#
- 1...Sc6
- 2.Qxc6#
- 2.f6#
- 1...exd4!
- threat
- 1.Bg8?
- 1...Sa2
- 2.Qc6#
- 1...Sc2
- 2.Qc6#
- 1...Sd3
- 2.Qc6#
- 1...Sd5
- 2.Qd3#
- 1...Sa6
- 2.Qc6#
- 1...Sc6
- 2.Qxc6#
- 1...Sh4
- 2.Qxe5#
- 1...Sf8
- 2.Qxe5#
- 1...Sh8
- 2.Qxe5#
- 1...e2
- 2.Sd2#
- 1...exd4!
- 1...Sa2
- 1.Rca3?
- 1...Sa2
- 2.Qc6#
- 1...Sc2
- 2.Qc6#
- 1...Sd3
- 2.Qc6#
- 1...Sd5
- 2.Qd3#
- 1...Sa6
- 2.Qc6#
- 1...Sc6
- 2.Qxc6#
- 1...Sh4
- 2.Qxe5#
- 1...Sf8
- 2.Qxe5#
- 1...Sh8
- 2.Qxe5#
- 1...e2
- 2.Sd2#
- 1...exd4!
- 1...Sa2
- 1.Rb3?
- 1...Sa2
- 2.Qc6#
- 1...Sc2
- 2.Qc6#
- 1...Sd3
- 2.Qc6#
- 1...Sd5
- 2.Qd3#
- 1...Sa6
- 2.Qc6#
- 1...Sc6
- 2.Qxc6#
- 1...Sh4
- 2.Qxe5#
- 1...Sf8
- 2.Qxe5#
- 1...Sh8
- 2.Qxe5#
- 1...e2
- 2.Sd2#
- 1...exd4!
- 1...Sa2
- 1.b3?
- 1...Sa2
- 2.Qc6#
- 1...Sc2
- 2.Qc6#
- 1...Sd3
- 2.Qc6#
- 1...Sd5
- 2.Qd3#
- 1...Sa6
- 2.Qc6#
- 1...Sc6
- 2.Qxc6#
- 1...Sh4
- 2.Qxe5#
- 1...Sf8
- 2.Qxe5#
- 1...Sh8
- 2.Qxe5#
- 1...e2
- 2.Sd2#
- 1...exd4!
- 1...Sa2
- 1.fxg6?
- threat
- 2.Qxe5#
- 2.g7#
- 1...Sd3
- 2.Qc6#
- 2.g7#
- 1...Sd5
- 2.Qd3#
- 2.g7#
- 1...Sc6
- 2.Qxc6#
- 2.g7#
- 1...exd4!
- threat
- 1.Kh2?
- Keys
- 1.Sb3!
- 1...Kxf3
- 2.Sd2#
- 1...Kxf5
- 2.Qxe5#
- 1...Sh4
- 2.Qc6#
- 1...Sf8
- 2.Qc6#
- 1...Sh8
- 2.Qc6#
- 1...e2
- 2.Qd3#
- 1...Kxf3
- 1.Sb3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 4
- ADDED MATES = 2
- REMOVED MATES = 6
- Sets
- S(b);N_GUARD::QAB(H)
- S(b);N_GUARD,SBLOCK::QAB1(H)
- S(b);N_GUARD::QAB(H),XS(b)
- S(h);N_GUARD::QAR1(H),XP(f)
- P(a);N_GUARD::S(D)
- Tries
- Try
- K(E);P-FLIGHT
- Vars
- S(b);N_GUARD::QAB(H)
- S(b);N_GUARD,SBLOCK::QAB1(H)
- S(b);N_GUARD::QAB(H),XS(b)
- S(h);N_GUARD::QAR1(H),XP(f)
- P(a);N_GUARD::S(D)
- Refutation
- P(f);XS(G)
- Try
- K(E);S_FLIGHT
- Vars
- S(b);N_GUARD::QAB(H)
- S(b);N_GUARD,SBLOCK::QAB1(H)
- S(h);N_GUARD::QAR1(H),XP(f)
- P(a);N_GUARD::S(D)
- Refutation
- P(f);XS(G)
- Try
- S(D);CHECK
- Refutation
- P(a);XS(D)
- Try
- S(G);P_PINS(b)
- Vars
- K(c);N_SPINS(b),P_SPINP(f),P_SPINS(h),S_FLIGHT,XP(I)::QAR1(H),XP(f)
- S(h);::QAB(H)
- P(a);::QAB1(H)
- Refutation
- K(c);N_SPINS(b),P_SPINP(a),S_FLIGHT,XS(D)
- Try
- S(G);P_PINS(b)
- Vars
- K(c);N_SPINS(b),P_SPINP(f),P_SPINS(h),S_FLIGHT,XP(I)::QAR1(H),XP(f)
- S(h);::QAB(H)
- Refutation
- K(c);N_SPINS(b),P_SPINP(a),S_FLIGHT,XS(D)
- Try
- B(L);XS(h)
- Threat
- DUALS(2)
- Refutation
- P(f);XS(G)
- Try
- B(L);
- Vars
- S(b);N_GUARD::QAB(H)
- S(b);N_GUARD,SBLOCK::QAB1(H)
- S(b);N_GUARD::QAB(H),XS(b)
- S(h);N_GUARD::QAR1(H),XP(f)
- P(a);N_GUARD::S(D)
- Refutation
- P(f);XS(G)
- Try
- R(C);
- Vars
- S(b);N_GUARD::QAB(H)
- S(b);N_GUARD,SBLOCK::QAB1(H)
- S(b);N_GUARD::QAB(H),XS(b)
- S(h);N_GUARD::QAR1(H),XP(f)
- P(a);N_GUARD::S(D)
- Refutation
- P(f);XS(G)
- Try
- R(C);
- Vars
- S(b);N_GUARD::QAB(H)
- S(b);N_GUARD,SBLOCK::QAB1(H)
- S(b);N_GUARD::QAB(H),XS(b)
- S(h);N_GUARD::QAR1(H),XP(f)
- P(a);N_GUARD::S(D)
- Refutation
- P(f);XS(G)
- Try
- P(B);
- Vars
- S(b);N_GUARD::QAB(H)
- S(b);N_GUARD,SBLOCK::QAB1(H)
- S(b);N_GUARD::QAB(H),XS(b)
- S(h);N_GUARD::QAR1(H),XP(f)
- P(a);N_GUARD::S(D)
- Refutation
- P(f);XS(G)
- Try
- P(I);XS(h)
- Threat
- DUALS(2)
- Refutation
- P(f);XS(G)
- Try
- Actual
- S(G);P_PINS(b)
- Vars
- K(c);N_SPINS(b),P_SPINP(a),S_FLIGHT,XS(D)::S(G)
- K(c);N_SPINS(b),P_SPINP(f),P_SPINS(h),S_FLIGHT,XP(I)::QAR1(H),XP(f)
- S(h);::QAB(H)
- P(a);::QAB1(H)
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).