MESON Chess Problem Database
Problem Display
PID: 6506 (r5N1/pbp2P2/Qqn1k1P1/p5P1/r3BP2/BN2R3/6K1/3R4 w - - 0 1)
Adabashev, Mark Ivanovich
1st Prize, 30 dnei, 1931
#2
12 + 9
| 6138 | Tvorsti Shakhmatnoi Krasoti | 1998 |
| 15148 | Sadier Collection | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Qc5
- 2.Sxc5#
- 1...Qxa6
- 2.Sc5#
- 1...Rxa3
- 2.Qc4#
- 1...Rc4
- 2.Qxc4#
- 1...Rxg8
- 2.fxg8Q#
- 2.fxg8B#
- 1...Bc8
- 2.f8S#
- 1...Sb4
- 2.Sc5#
- 1...Se5
- 2.Sc5#
- 2.f5#
- 1...Se7
- 2.Sc5#
- 1...Sb8
- 2.Sc5#
- 2.f8S#
- 1...Sd8
- 2.Sc5#
- 2.f8S#
- 1...Qc5
- Tries
- 1.Bf3+?
- 1...Qxe3
- 2.Bg4#
- 1...Re4
- 2.Bg4#
- 1...Se5
- 2.Rxe5#
- 1...Kf5!
- 1...Qxe3
- 1.Bd5+?
- 1...Kd7
- 2.Be6#
- 1...Kf5!
- 1...Kd7
- 1.Rd5?
- threat
- 2.f5#
- 1...Sd4
- 2.Sc5#
- 2.Bf3#
- 1...Se7
- 2.Sc5#
- 1...Rxe4!
- threat
- 1.Qb5?
- threat
- 2.Bf5#
- 2.Qd5#
- 2.Qf5#
- 2.f5#
- 1...Rxe4
- 2.Qd5#
- 2.f5#
- 1...Qd4
- 2.Bf5#
- 2.Qf5#
- 1...Rd4
- 2.Bf5#
- 2.Qf5#
- 1...Qc5
- 2.Sxc5#
- 1...Rd8
- 2.Bf5#
- 2.Qf5#
- 2.f5#
- 1...Sb4
- 2.Qd7#
- 2.Qe5#
- 2.Qf5#
- 2.f5#
- 1...Sd4
- 2.Bc6#
- 2.Bxb7#
- 1...Se5
- 2.Qxe5#
- 2.f5#
- 1...Se7
- 2.Qd7#
- 2.Qe5#
- 1...Sb8
- 2.Qe8#
- 2.Qe5#
- 2.Qf5#
- 2.f5#
- 2.f8S#
- 1...Sd8
- 2.Qd7#
- 2.Qe8#
- 2.Qe5#
- 2.Qf5#
- 2.f5#
- 2.f8S#
- 1...Qxb5!
- threat
- 1.f8Q?
- threat
- 2.Bf5#
- 2.Qf5#
- 2.Qf6#
- 2.Qf7#
- 1...Rxe4
- 2.Qc4#
- 2.Qf6#
- 2.Qf7#
- 1...Qd4
- 2.Qe7#
- 2.Qf5#
- 2.Qf7#
- 1...Rd4
- 2.Qf5#
- 2.Qf7#
- 1...Sd4
- 2.Sc5#
- 2.Bc6#
- 2.Qe7#
- 2.Qf7#
- 1...Qc5
- 2.Sxc5#
- 2.Bf5#
- 2.Qf6#
- 2.Qf7#
- 1...Qb5
- 2.Bf5#
- 2.Qe7#
- 2.Qf6#
- 2.Qf7#
- 1...Sb4
- 2.Sc5#
- 2.Bxb7#
- 2.Qe7#
- 2.Qf5#
- 2.Qf6#
- 2.Qf7#
- 1...Se5
- 2.Sc5#
- 2.Qe7#
- 2.Qf5#
- 2.Qf6#
- 2.f5#
- 1...Se7
- 2.Sc5#
- 2.Qxe7#
- 2.Qf6#
- 2.Qf7#
- 1...Sb8
- 2.Sc5#
- 2.Qe7#
- 2.Qf5#
- 2.Qf6#
- 2.Qf7#
- 2.Qe8#
- 1...Sd8
- 2.Sc5#
- 2.Qe7#
- 2.Qf5#
- 2.Qf6#
- 2.Qe8#
- 1...Rxf8!
- threat
- 1.Bf3+?
- Keys
- 1.Se7!
- threat
- 2.Bf5#
- 1...Rxe4
- 2.Qc4#
- 1...Sxe7
- 2.Sc5#
- 1...Sb4
- 2.Bxb7#
- 1...Sd4
- 2.Bc6#
- 1...Se5
- 2.f5#
- 1...Sb8
- 2.f8S#
- 1...Sd8
- 2.f8S#
- threat
- 1.Se7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 5
- REMOVED MATES = 5
- Sets
- Q(c);N_GUARD,P_SPINS(d)::S(D),XQ(c)
- Q(c);N_GUARD,XQ(I)::S(D)
- R(a);N_GUARD,XB(C)::QAB(I)
- R(a);N_GUARD::QAB(I),XR(a)
- R(i);OGATE,XS(L)::PXR(i)=Q
- B(g);S_CUTR(i)::P=S
- S(d);P_PINB(F),P_SPINQ(c)::S(D)
- Tries
- Try
- B(F);CHECK
- Vars
- Q(c);P_SPINS(d),XR(E)::B(F)
- R(a);P_SPINR(a)::B(F)
- S(d);N_GUARD,P_PINB(F),P_SPINQ(c),P_SPINS(d)::R1(E),XS(d)
- Refutation
- K(e);S_FLIGHT
- Try
- B(F);CHECK
- Vars
- K(e);S_FLIGHT::R(A)+B(F),DCHECK
- Refutation
- K(e);S_FLIGHT
- Try
- R(A);
- Threat
- P(G)
- Vars
- S(d);P_SPINQ(c)::S(D)
- Refutation
- R(a);P_SPINR(a),XB(F)
- Try
- Q(I);
- Threat
- DUALS(4)
- Vars
- Q(c);N_GUARD::S(D),XQ(c)
- Refutation
- Q(c);XQ(I)
- Try
- P(K);
- Threat
- DUALS(4)
- Refutation
- R(i);XQ(K)
- Try
- Actual
- S(L);
- Threat
- R(E)+B(F),DCHECK
- Vars
- R(a);N_GUARD,P_SPINR(a),XB(F)::QAB(I)
- S(d);P_PINB(F),P_SPINQ(c),SBLOCK,XS(L)::S(D)
- S(d);OGATE,P_PINB(F),P_SPINQ(c)::R(E)+B(F),XB(g)
- S(d);P_PINB(F),P_SPINQ(c),S_CUTR(a)::R(E)+B(F)
- S(d);P_PINB(F),P_SPINQ(c),SBLOCK::P(G)
- S(d);P_PINB(F),P_SPINQ(c),S_CUTR(i)::P=S
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).