MESON Chess Problem Database
Problem Display
PID: 225708 (B7/3q1P2/1pP1rp1K/3R1PpN/2QPk1r1/1p2PR1n/n1b1P3/B2N4 w - - 0 1)
Postnikov, Oleksandr Borisovich
Vasilenko, Anatoly Grigorovich
Praca, 1995
#2
14 + 11
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Rg3
- 2.Sxg3#
- 1...Rf4
- 2.Sg3#
- 1...Re5
- 2.Sxf6#
- 2.dxe5#
- 1...Re7
- 2.Sxf6#
- 1...Re8
- 2.Sxf6#
- 1...Sc1
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sb4
- 2.Sc3#
- 1...Sg1
- 2.Sf2#
- 1...Sf2
- 2.Sxf2#
- 1...Sf4
- 2.Sf2#
- 1...Rg3
- Tries
- 1.Ra5?
- threat
- 2.d5#
- 1...Qxc6
- 2.Qxe6#
- 1...Qxd4
- 2.Qxd4#
- 1...Rxc6
- 2.Sxf6#
- 1...Qd5
- 2.Qxd5#
- 1...Rf4
- 2.Sg3#
- 1...Bd3
- 2.Qxd3#
- 1...Sc3
- 2.Sxc3#
- 1...Sf4
- 2.Sf2#
- 1...b2
- 2.Qxc2#
- 1...b5!
- threat
- 1.Rc5?
- threat
- 2.d5#
- 1...Qxd4
- 2.Qxd4#
- 1...Qd5
- 2.Qxd5#
- 1...Rf4
- 2.Sg3#
- 1...Bd3
- 2.Qxd3#
- 1...Sc3
- 2.Sxc3#
- 1...Sf4
- 2.Sf2#
- 1...b2
- 2.Qxc2#
- 1...b5!
- threat
- 1.Re5+?
- 1...Rxe5
- 2.Sxf6#
- 2.d5#
- 1...fxe5+!
- 1...Rxe5
- 1.Rd6?
- threat
- 2.Qd5#
- 2.d5#
- 2.cxd7#
- 1...Qxc6
- 2.Bxc6#
- 2.Rxe6#
- 2.Qxe6#
- 2.Qxc6#
- 1...Qxd6
- 2.d5#
- 1...Qxf7
- 2.Qd5#
- 2.d5#
- 2.c7#
- 1...Rxd6
- 2.d5#
- 1...Rf4
- 2.Sg3#
- 2.Qd5#
- 1...b5
- 2.Qd5#
- 2.cxd7#
- 1...Qc8
- 2.Qd5#
- 2.d5#
- 1...Qe8
- 2.Qd5#
- 2.d5#
- 1...Qa7
- 2.Rxe6#
- 2.Qd5#
- 2.Qxe6#
- 2.d5#
- 1...Qb7
- 2.Rxe6#
- 2.Qd5#
- 2.Qxe6#
- 2.d5#
- 1...Qc7
- 2.Qd5#
- 2.Qxe6#
- 2.d5#
- 1...Qe7
- 2.Qd5#
- 2.d5#
- 2.c7#
- 1...Qd8
- 2.Rxe6#
- 2.Qd5#
- 2.Qxe6#
- 2.d5#
- 1...Re5
- 2.Sxf6#
- 2.dxe5#
- 2.d5#
- 1...Re8
- 2.Sxf6#
- 2.Qd5#
- 2.d5#
- 1...Bd3
- 2.Qxd3#
- 2.Qd5#
- 2.cxd7#
- 1...Sc3
- 2.Sxc3#
- 1...Sb4
- 2.Sc3#
- 2.d5#
- 1...b2
- 2.Qd5#
- 2.Qxc2#
- 2.cxd7#
- 1...Sf4!
- threat
- 1.Rxd7?
- threat
- 2.Qd5#
- 2.Qxe6#
- 2.d5#
- 1...Rxc6
- 2.Sxf6#
- 2.Bxc6#
- 2.Re7#
- 2.Qd5#
- 2.Qe6#
- 2.Qxc6#
- 1...Rf4
- 2.Sg3#
- 2.Qd5#
- 2.Qxe6#
- 1...b5
- 2.Qd5#
- 2.Qxe6#
- 1...Re5
- 2.Sxf6#
- 2.dxe5#
- 2.d5#
- 1...Rd6
- 2.d5#
- 1...Re7
- 2.Sxf6#
- 2.Rxe7#
- 2.Qd5#
- 2.d5#
- 2.c7#
- 1...Re8
- 2.Sxf6#
- 2.Qd5#
- 2.d5#
- 2.fxe8Q#
- 2.fxe8R#
- 1...Bd3
- 2.Qxd3#
- 2.Qd5#
- 2.Qxe6#
- 1...Sc3
- 2.Sxc3#
- 2.Qxe6#
- 1...Sb4
- 2.Sc3#
- 2.Qxe6#
- 2.d5#
- 1...b2
- 2.Qd5#
- 2.Qxe6#
- 2.Qxc2#
- 1...Sf4!
- threat
- 1.cxd7?
- threat
- 2.Re5#
- 2.Rd6#
- 1...Rf4
- 2.Sg3#
- 2.Re5#
- 1...Re5
- 2.Sxf6#
- 2.Rxe5#
- 2.dxe5#
- 1...Rd6
- 2.Re5#
- 2.Rxd6#
- 1...Re8
- 2.Sxf6#
- 2.Re5#
- 2.dxe8Q#
- 2.dxe8R#
- 2.fxe8Q#
- 2.fxe8R#
- 1...Sc3
- 2.Sxc3#
- 2.Re5#
- 1...Sb4
- 2.Sc3#
- 2.Re5#
- 1...Sf4
- 2.Sf2#
- 2.Re5#
- 1...Rc6!
- threat
- 1.Ra5?
- Keys
- 1.Rb5!
- threat
- 2.d5#
- 1...Qxc6
- 2.Qxe6#
- 1...Qxd4
- 2.Qxd4#
- 1...Rxc6
- 2.Sxf6#
- 1...Qd5
- 2.Qxd5#
- 1...Rf4
- 2.Sg3#
- 1...Bd3
- 2.Qxd3#
- 1...Sc3
- 2.Sxc3#
- 1...Sf4
- 2.Sf2#
- 1...b2
- 2.Qxc2#
- threat
- 1.Rb5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 7
- Sets
- R(f);N_GUARD::S(J),XR(f)
- R(f);N_GUARD::S(J)
- R(i);N_GUARD::S(J),XP(j)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- S(d);N_GUARD::S(B)
- S(d);N_GUARD::S(B),XS(d)
- Tries
- Try
- R(H);
- Threat
- QAR(F)+P(G)
- Vars
- Q(k);N_GUARD,P_SPINQ(k),XP(K)::QAR2(F),XR(i)
- Q(k);OGATE,P_SPINQ(k),XP(G)::QAR1(F),XQ(k)
- R(i);N_GUARD,P_SPINR(i),XP(K)::S(J),XP(j)
- Q(k);N_GUARD::QAB1(F),XQ(k)
- R(f);N_GUARD::S(J)
- B(b);N_GUARD::QAB1(F),XB(b)
- S(a);N_GUARD::S(B),XS(a)
- S(d);N_GUARD::S(B)
- P(c);N_GUARD::QAB(F),XB(b)
- Refutation
- P(h);
- Try
- R(H);
- Threat
- QAR(F)+P(G)
- Vars
- Q(k);OGATE,P_SPINQ(k),XP(G)::QAR1(F),XQ(k)
- Q(k);N_GUARD::QAB1(F),XQ(k)
- R(f);N_GUARD::S(J)
- B(b);N_GUARD::QAB1(F),XB(b)
- S(a);N_GUARD::S(B),XS(a)
- S(d);N_GUARD::S(B)
- P(c);N_GUARD::QAB(F),XB(b)
- Refutation
- P(h);
- Try
- R(H);CHECK
- Refutation
- P(j);CHECK,XR(H)
- Try
- R(H);
- Threat
- DUALS(3)
- Vars
- Q(k);XR(H)::QAR(F)+P(G)
- R(i);XR(H)::QAR(F)+P(G)
- S(a);N_GUARD::S(B),XS(a)
- Refutation
- S(d);
- Try
- R(H);XQ(k)
- Threat
- DUALS(3)
- Vars
- R(i);::QAR(F)+P(G)
- Refutation
- S(d);
- Try
- P(K);XQ(k)
- Threat
- DUALS(2)
- Refutation
- R(i);
- Try
- Actual
- R(H);
- Threat
- QAR(F)+P(G)
- Vars
- Q(k);N_GUARD,P_SPINQ(k),XP(K)::QAR2(F),XR(i)
- Q(k);OGATE,P_SPINQ(k),XP(G)::QAR1(F),XQ(k)
- R(i);N_GUARD,P_SPINR(i),XP(K)::S(J),XP(j)
- Q(k);N_GUARD::QAB1(F),XQ(k)
- R(f);N_GUARD::S(J)
- B(b);N_GUARD::QAB1(F),XB(b)
- S(a);N_GUARD::S(B),XS(a)
- S(d);N_GUARD::S(B)
- P(c);N_GUARD::QAB(F),XB(b)
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).