MESON Chess Problem Database
Problem Display
PID: 66371 (6R1/2n1pN2/7B/K1kB4/1Nbrp2p/4p2Q/4P3/2R5 w - - 0 1)
Syzonenko, Viktor N
USSR Championship, 1977-1978
#2
9 + 8
| 5454 | Near Snap | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rd1
- 2.Rxc4#
- 1...Rd2
- 2.Rxc4#
- 1...Rd3
- 2.Rxc4#
- 1...e5
- 2.Bf8#
- 1...e6
- 2.Bf8#
- 1...Rd1
- Tries
- 1.Sa6+?
- 1...Kxd5
- 2.Qd7#
- 1...Sxa6!
- 1...Kxd5
- 1.Rb8?
- 1...Sxd5
- 2.Rb5#
- 1...Rd1
- 2.Rxc4#
- 1...Rd2
- 2.Rxc4#
- 1...Rd3
- 2.Rxc4#
- 1...Sb5
- 2.Rxb5#
- 1...Sa6
- 2.Rb5#
- 1...Se6
- 2.Rb5#
- 1...Sa8
- 2.Rb5#
- 1...Se8
- 2.Rb5#
- 1...e5
- 2.Bf8#
- 1...e6
- 2.Bf8#
- 1...Rxd5!
- 1...Sxd5
- 1.Rc8?
- threat
- 2.Rxc7#
- 1...Rd1
- 2.Rxc4#
- 1...Rd2
- 2.Rxc4#
- 1...Rd3
- 2.Rxc4#
- 1...Rxd5!
- threat
- 1.Qf5?
- 1...Rxd5
- 2.Bxe3#
- 1...Sxd5
- 2.Rc8#
- 1...Rd1
- 2.Rxc4#
- 1...Rd2
- 2.Rxc4#
- 1...Rd3
- 2.Rxc4#
- 1...Sb5
- 2.Sa6#
- 1...Sa6
- 2.Sxa6#
- 1...Se6
- 2.Sa6#
- 1...Sa8
- 2.Sa6#
- 1...Se8
- 2.Sa6#
- 1...e5
- 2.Bf8#
- 1...e6
- 2.Bf8#
- 1...h3!
- 1...Rxd5
- 1.Qe6?
- threat
- 2.Qb6#
- 2.Qc6#
- 2.Qxe7#
- 1...Rxd5
- 2.Qb6#
- 1...Sxd5
- 2.Sa6#
- 2.Qc6#
- 1...Rd1
- 2.Rxc4#
- 2.Qb6#
- 1...Rd2
- 2.Rxc4#
- 2.Qb6#
- 1...Rd3
- 2.Rxc4#
- 2.Qb6#
- 1...Sb5
- 2.Sa6#
- 2.Qb6#
- 2.Qc6#
- 1...Sa8
- 2.Sa6#
- 2.Qc6#
- 2.Qxe7#
- 1...Se8
- 2.Sa6#
- 2.Qb6#
- 2.Qc6#
- 1...Sxe6!
- threat
- 1.Qd7?
- threat
- 2.Qc6#
- 2.Qxc7#
- 2.Qxe7#
- 1...Sxd5
- 2.Sa6#
- 2.Qb5#
- 2.Qc6#
- 1...Rd1
- 2.Rxc4#
- 1...Rd2
- 2.Rxc4#
- 1...Rd3
- 2.Rxc4#
- 1...Sb5
- 2.Sa6#
- 2.Qxb5#
- 2.Qc6#
- 1...Sa6
- 2.Sxa6#
- 2.Qb5#
- 2.Qc6#
- 2.Qa7#
- 2.Qxe7#
- 1...Se6
- 2.Sa6#
- 2.Qb5#
- 2.Qc6#
- 2.Qa7#
- 2.Qxe7#
- 1...Sa8
- 2.Sa6#
- 2.Qb5#
- 2.Qc6#
- 2.Qxe7#
- 1...Se8
- 2.Sa6#
- 2.Qb5#
- 2.Qc6#
- 2.Qa7#
- 1...e5
- 2.Bf8#
- 2.Qc6#
- 2.Qd6#
- 2.Qxc7#
- 2.Qe7#
- 1...e6
- 2.Bf8#
- 2.Qc6#
- 2.Qd6#
- 2.Qxc7#
- 2.Qe7#
- 1...Rxd5!
- threat
- 1.Qc8?
- threat
- 2.Qxc7#
- 1...Rd1
- 2.Rxc4#
- 1...Rd2
- 2.Rxc4#
- 1...Rd3
- 2.Rxc4#
- 1...Rxd5!
- threat
- 1.Sa6+?
- Keys
- 1.Rg5!
- 1...Rxd5
- 2.Qxe3#
- 1...Sxd5
- 2.Qc8#
- 1...Rd1
- 2.Rxc4#
- 1...Rd2
- 2.Rxc4#
- 1...Rd3
- 2.Rxc4#
- 1...Sb5
- 2.Sa6#
- 1...Sa6
- 2.Sxa6#
- 1...Se6
- 2.Sa6#
- 1...Sa8
- 2.Sa6#
- 1...Se8
- 2.Sa6#
- 1...e5
- 2.Bf8#
- 1...e6
- 2.Bf8#
- 1...Rxd5
- 1.Rg5!
This anticipates 103793(1992)
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 0
- Sets
- R(c);N_GUARD::R1(A),XB(b)
- P(h);OGATEB::B(G)
- Tries
- Try
- S(D);CHECK
- Vars
- K(f);N_SPINB(b),P-FLIGHT,XB(F)::QAR2(C)
- Refutation
- S(g);XS(D)
- Try
- R(I);
- Vars
- S(g);N_GUARD,XB(F)::R1(I)
- R(c);N_GUARD::R1(A),XB(b)
- S(g);N_GUARD::R1(I),XS(g)
- S(g);N_GUARD::R1(I)
- P(h);OGATEB::B(G)
- Refutation
- R(c);XB(F)
- Try
- R(I);P_PINS(g)
- Threat
- R(I),XS(g)
- Vars
- R(c);N_GUARD::R1(A),XB(b)
- Refutation
- R(c);XB(F)
- Try
- Q(C);
- Vars
- R(c);OGATEB,P_SPINR(c),XB(F)::B(G),XP(a)
- S(g);OGATEB,P_SPINS(g),XB(F)::R(I)
- R(c);N_GUARD::R1(A),XB(b)
- S(g);N_GUARD::S(D)
- S(g);N_GUARD::S(D),XS(g)
- P(h);OGATEB::B(G)
- Refutation
- P(e);
- Try
- Q(C);
- Threat
- DUALS(3)
- Vars
- R(c);XB(F)::QAB1(C)
- Refutation
- S(g);XQ(C)
- Try
- Q(C);
- Threat
- DUALS(3)
- Vars
- R(c);N_GUARD::R1(A),XB(b)
- Refutation
- R(c);XB(F)
- Try
- Q(C);P_PINS(g)
- Threat
- QAR2(C),XS(g)
- Vars
- R(c);N_GUARD::R1(A),XB(b)
- Refutation
- R(c);XB(F)
- Try
- Actual
- R(I);
- Vars
- R(c);OGATEB,P_SPINR(c),XB(F)::QAB(C),XP(a)
- S(g);OGATEB,P_SPINS(g),XB(F)::QAR(C)
- R(c);N_GUARD::R1(A),XB(b)
- S(g);N_GUARD::S(D)
- S(g);N_GUARD::S(D),XS(g)
- P(h);OGATEB::B(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).