MESON Chess Problem Database
Problem Display
PID: 263075 (1R2K3/p1Ppn3/2kp2p1/R2N1b2/1P4Q1/b1PN3B/q7/8 w - - 0 1)
Gordian, Yury Markovic
Vasilenko, Anatoly Grigorovich
Sp. HM., SuperProblem, 2020
#2
10 + 9
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Qb1
- 2.Qc4#
- 1...Qc4
- 2.Qxc4#
- 1...Qa1
- 2.Qc4#
- 1...Qb2
- 2.Qc4#
- 1...Qc2
- 2.Qc4#
- 1...Qd2
- 2.Qc4#
- 1...Qe2
- 2.Qc4#
- 1...Qg2
- 2.Qc4#
- 1...Qh2
- 2.Qc4#
- 1...Bxb4
- 2.S3xb4#
- 1...Bxd3
- 2.Qxd7#
- 1...Be4
- 2.Qxd7#
- 1...Sg8
- 2.c8Q#
- 2.c8R#
- 1...a6
- 2.Rb6#
- 1...Qb1
- Tries
- 1.Kxe7?
- threat
- 2.c8Q#
- 2.c8R#
- 1...Qxd5
- 2.c8Q#
- 2.c8R#
- 1...Bxb4
- 2.S3xb4#
- 2.c8Q#
- 2.c8R#
- 1...Bxd3
- 2.Qxd7#
- 2.c8Q#
- 2.c8R#
- 1...Bxg4
- 2.c8Q#
- 2.c8R#
- 1...Qb1
- 2.Qc4#
- 2.c8Q#
- 2.c8R#
- 1...Qb3
- 2.c8Q#
- 2.c8R#
- 1...Qc4
- 2.Qxc4#
- 2.c8Q#
- 2.c8R#
- 1...Qa1
- 2.Qc4#
- 2.c8Q#
- 2.c8R#
- 1...Qb2
- 2.Qc4#
- 2.c8Q#
- 2.c8R#
- 1...Qc2
- 2.Qc4#
- 2.c8Q#
- 2.c8R#
- 1...Qd2
- 2.Qc4#
- 2.c8Q#
- 2.c8R#
- 1...Qf2
- 2.c8Q#
- 2.c8R#
- 1...Qg2
- 2.Qc4#
- 2.c8Q#
- 2.c8R#
- 1...Qh2
- 2.Qc4#
- 2.c8Q#
- 2.c8R#
- 1...Bc1
- 2.c8Q#
- 2.c8R#
- 1...Bb2
- 2.c8Q#
- 2.c8R#
- 1...Be4
- 2.Qxd7#
- 2.c8Q#
- 2.c8R#
- 1...Be6
- 2.c8Q#
- 2.c8R#
- 1...g5
- 2.c8Q#
- 2.c8R#
- 1...a6
- 2.Rb6#
- 2.c8Q#
- 2.c8R#
- 1...Qe2+!
- threat
- 1.Kd8?
- threat
- 2.Sxe7#
- 1...Qxd5
- 2.Ra6#
- 1...Sxd5
- 2.b5#
- 1...Qe2
- 2.Qc4#
- 1...Sg8
- 2.c8Q#
- 2.c8R#
- 1...Sc8!
- threat
- 1.Qxf5?
- threat
- 2.Ra6#
- 2.Qxd7#
- 2.b5#
- 1...Qxd5
- 2.Qxd7#
- 1...Bxb4
- 2.S3xb4#
- 2.Qxd7#
- 1...Sxd5
- 2.Qxd7#
- 1...Sxf5
- 2.c8Q#
- 2.c8R#
- 1...Qb1
- 2.Ra6#
- 2.Qxd7#
- 1...Qb3
- 2.Ra6#
- 2.Qxd7#
- 1...Qc4
- 2.Qxd7#
- 1...Qb2
- 2.Ra6#
- 2.Qxd7#
- 1...Qf2
- 2.Qxd7#
- 2.b5#
- 1...Bc1
- 2.Qxd7#
- 2.b5#
- 1...Bb2
- 2.Qxd7#
- 2.b5#
- 1...Sc8
- 2.Qxd7#
- 2.b5#
- 1...a6
- 2.Rxa6#
- 2.Rb6#
- 2.Qxd7#
- 1...gxf5!
- threat
- 1.Qe4?
- threat
- 2.Ra6#
- 2.b5#
- 1...Bxb4
- 2.S3xb4#
- 1...Bxe4
- 2.Bxd7#
- 1...Sxd5
- 2.c8Q#
- 2.c8R#
- 1...Qb1
- 2.Ra6#
- 2.Qc4#
- 1...Qb3
- 2.Ra6#
- 1...Qc4
- 2.Qxc4#
- 1...Qb2
- 2.Ra6#
- 2.Qc4#
- 1...Qf2
- 2.b5#
- 1...Bc1
- 2.b5#
- 1...Bb2
- 2.b5#
- 1...Sc8
- 2.b5#
- 1...a6
- 2.Rxa6#
- 2.Rb6#
- 1...Qxd5!
- threat
- 1.c4?
- threat
- 2.Ra6#
- 2.b5#
- 1...Qxc4
- 2.Qxc4#
- 1...Bxb4
- 2.S3xb4#
- 1...Bxd3
- 2.Ra6#
- 2.Qxd7#
- 1...Qb1
- 2.Ra6#
- 1...Qb3
- 2.Ra6#
- 1...Qb2
- 2.Ra6#
- 1...Qf2
- 2.b5#
- 1...Bc1
- 2.b5#
- 1...Bb2
- 2.b5#
- 1...Sc8
- 2.b5#
- 1...a6
- 2.Rxa6#
- 2.Rb6#
- 1...Sxd5!
- threat
- 1.Kxe7?
- Keys
- 1.Bg2!
- threat
- 2.Ra6#
- 2.b5#
- 1...Qxd5
- 2.Qc4#
- 1...Qxg2
- 2.Qc4#
- 1...Bxb4
- 2.S3xb4#
- 1...Bxd3
- 2.Qxd7#
- 1...Sxd5
- 2.c8Q#
- 2.c8R#
- 1...Qb1
- 2.Ra6#
- 2.Qc4#
- 1...Qb3
- 2.Ra6#
- 1...Qc4
- 2.Qxc4#
- 1...Qb2
- 2.Ra6#
- 2.Qc4#
- 1...Qf2
- 2.b5#
- 1...Bc1
- 2.b5#
- 1...Bb2
- 2.b5#
- 1...Be4
- 2.Qxd7#
- 1...Sc8
- 2.b5#
- 1...a6
- 2.Rxa6#
- 2.Rb6#
- threat
- 1.Bg2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 8
- Sets
- Q(a);N_GUARD::QAR2(E)
- Q(a);N_GUARD::QAR2(E),XQ(a)
- B(b);XP(D)::S(B),XB(b)
- B(c);OGATE,XS(B)::QAB1(E),XP(h)
- B(c);OGATE::QAB1(E),XP(h)
- S(i);N_GUARD::P=Q
- P(g);N_GUARD::R1(I)
- Tries
- Try
- K(J);P-FLIGHT,XS(i)
- Threat
- P=Q
- Vars
- Q(a);XS(G)::P=Q
- B(c);XQ(E)::P=Q
- Q(a);::P=Q
- B(b);::P=Q
- B(c);::P=Q
- P(f);::P=Q
- Refutation
- Q(a);CHECK
- Try
- K(J);P-FLIGHT
- Threat
- S(G),XS(i)
- Vars
- Q(a);SBLOCK,XS(G)::R(F)
- S(i);SBLOCK,XS(G)::P(D)
- Q(a);N_GUARD::QAR2(E)
- S(i);N_GUARD::P=Q
- Refutation
- S(i);
- Try
- Q(E);XB(c)
- Threat
- DUALS(3)
- Vars
- Q(a);XS(G)::QAB1(E),XP(h)
- S(i);XS(G)::QAB1(E),XP(h)
- S(i);N_GUARD,XQ(E)::P=Q
- Q(a);::QAB1(E),XP(h)
- Refutation
- P(f);XQ(E)
- Try
- Q(E);
- Threat
- DUALS(2)
- Vars
- B(b);XP(D)::S(B),XB(b)
- B(c);OGATE,XQ(E)::B(C),XP(h)
- S(i);N_GUARD,P_SPINS(i),XS(G)::P=Q
- Q(a);::R(F)
- Q(a);N_GUARD::QAR2(E),XQ(a)
- Q(a);::P(D)
- B(b);::P(D)
- S(i);::P(D)
- Refutation
- Q(a);P_SPINQ(a),XS(G)
- Try
- P(A);
- Threat
- DUALS(2)
- Vars
- Q(a);OGATE,XP(A)::QAR2(E),XQ(a)
- B(b);XP(D)::S(B),XB(b)
- Q(a);::R(F)
- Q(a);::P(D)
- B(b);::P(D)
- S(i);::P(D)
- Refutation
- S(i);XS(G)
- Try
- Actual
- B(C);
- Threat
- DUALS(2)
- Vars
- Q(a);N_GUARD,P_SPINQ(a),XS(G)::QAR2(E)
- Q(a);N_GUARD,XB(C)::QAR2(E)
- B(b);XP(D)::S(B),XB(b)
- B(c);OGATE,XS(B)::QAB1(E),XP(h)
- S(i);N_GUARD,P_SPINS(i),XS(G)::P=Q
- Q(a);::R(F)
- Q(a);N_GUARD::QAR2(E),XQ(a)
- Q(a);::P(D)
- B(b);::P(D)
- B(c);OGATE::QAB1(E),XP(h)
- S(i);::P(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).