MESON Chess Problem Database
Problem Display
PID: 238549 (n6B/r1RN2Kp/1p5P/2b5/2qkbP2/2pPNp2/B4P2/3R3Q w - - 0 1)
Dyachuk, Vasyl Vasilovich
Problemist Ukraini, 2009
#2
12 + 10
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qxd3
- 2.Kf7#
- 2.Kg8#
- 2.Sc2#
- 1...Qb5
- 2.Kf7#
- 2.Kg8#
- 2.Sc2#
- 1...Qd5
- 2.Sc2#
- 1...Qa6
- 2.Kf7#
- 2.Kg8#
- 2.Sc2#
- 1...Qe6
- 2.Sc2#
- 1...Qf7+
- 2.Kxf7#
- 1...Qg8+
- 2.Kxg8#
- 1...Qa4
- 2.Kf7#
- 2.Kg8#
- 1...Qb4
- 2.Kf7#
- 2.Kg8#
- 2.Sc2#
- 1...Bd5
- 2.Kxh7#
- 2.Sc2#
- 2.Sf5#
- 1...Bc6
- 2.Kxh7#
- 1...Bb7
- 2.Kxh7#
- 1...Ba3
- 2.Rxc4#
- 1...Bb4
- 2.Rxc4#
- 1...Bd6
- 2.Rxc4#
- 1...Be7
- 2.Rxc4#
- 1...Bf8+
- 2.Kxf8#
- 1...Qxd3
- Tries
- 1.Kf6?
- threat
- 2.Kg5#
- 1...Qe6+
- 2.Kxe6#
- 1...Qf7+
- 2.Kxf7#
- 1...Be7+
- 2.Kxe7#
- 1...Qd5
- 2.Sc2#
- 1...Qg8
- 2.Sc2#
- 1...Bd6
- 2.Rxc4#
- 1...Bf8
- 2.Rxc4#
- 1...Bxd3!
- threat
- 1.Sf5+?
- 1...Kd5
- 2.Bxc4#
- 1...Bxf5!
- 1...Kd5
- 1.Bxc4?
- threat
- 2.Kf7#
- 2.Kg8#
- 2.Sc2#
- 1...Bf8+
- 2.Kxf8#
- 1...c2
- 2.Kf7#
- 2.Kg8#
- 1...Ra2
- 2.Kf7#
- 2.Kg8#
- 1...Bd5
- 2.Kxh7#
- 2.Sc2#
- 2.Sf5#
- 1...Bg6
- 2.Kg8#
- 2.Sc2#
- 1...Bd6
- 2.Sc2#
- 1...Be7
- 2.Sc2#
- 1...Bxd3!
- threat
- 1.Rxc5?
- threat
- 2.Kf8#
- 2.Sc2#
- 2.Rxc4#
- 1...Qf7+
- 2.Kxf7#
- 1...Qg8+
- 2.Kxg8#
- 1...Qxa2
- 2.Kf8#
- 1...Qxd3
- 2.Kf7#
- 2.Kf8#
- 2.Kg8#
- 2.Sc2#
- 2.Rc4#
- 1...Qxc5
- 2.Sc2#
- 1...Rxa2
- 2.Kf8#
- 2.Rxc4#
- 1...Bxd3
- 2.Rxc4#
- 1...bxc5
- 2.Kf8#
- 1...c2
- 2.Kf8#
- 2.Rxc4#
- 1...Qb3
- 2.Kf8#
- 1...Qb5
- 2.Kf7#
- 2.Kf8#
- 2.Kg8#
- 2.Sc2#
- 1...Qd5
- 2.Sc2#
- 1...Qa6
- 2.Kf7#
- 2.Kf8#
- 2.Kg8#
- 2.Sc2#
- 1...Qe6
- 2.Sc2#
- 1...Qa4
- 2.Kf7#
- 2.Kf8#
- 2.Kg8#
- 1...Qb4
- 2.Kf7#
- 2.Kf8#
- 2.Kg8#
- 2.Sc2#
- 1...Ra4
- 2.Kf8#
- 2.Sc2#
- 1...Rc7
- 2.Kf8#
- 2.Sc2#
- 1...Bd5
- 2.Kxh7#
- 2.Kf8#
- 2.Sc2#
- 2.Sf5#
- 1...b5
- 2.Kf8#
- 2.Sc2#
- 1...Rxd7+!
- threat
- 1.Qxf3?
- threat
- 2.Qxe4#
- 1...Qf7+
- 2.Kxf7#
- 1...Qg8+
- 2.Kxg8#
- 1...Bf8+
- 2.Kxf8#
- 1...Qxd3
- 2.Kf7#
- 2.Kg8#
- 2.Sc2#
- 1...Bxd3
- 2.Sc2#
- 2.Sf5#
- 1...Bxf3
- 2.Kxh7#
- 1...Qd5
- 2.Sc2#
- 2.dxe4#
- 1...Qe6
- 2.Sc2#
- 2.dxe4#
- 1...Bd5
- 2.Kxh7#
- 2.Sc2#
- 2.Sf5#
- 2.dxc4#
- 1...Bf5
- 2.Sc2#
- 2.Sxf5#
- 1...Bc6
- 2.Kxh7#
- 2.Sc2#
- 2.Sf5#
- 2.dxc4#
- 1...Bg6
- 2.Sc2#
- 1...Bb7
- 2.Kxh7#
- 2.Sc2#
- 2.Sf5#
- 2.dxc4#
- 1...c2!
- threat
- 1.Qh5?
- threat
- 2.Sc2#
- 2.Qe5#
- 1...Qf7+
- 2.Kxf7#
- 1...Qg8+
- 2.Kxg8#
- 1...Bf8+
- 2.Kxf8#
- 1...Qxa2
- 2.Qe5#
- 1...Rxa2
- 2.Qe5#
- 1...Bxd3
- 2.Qe5#
- 1...c2
- 2.Qe5#
- 1...Qb3
- 2.Qe5#
- 1...Qd5
- 2.Sc2#
- 1...Qe6
- 2.Sc2#
- 1...Qa4
- 2.Kf7#
- 2.Kg8#
- 2.Qe5#
- 1...Bd6
- 2.Sc2#
- 2.Rxc4#
- 1...Bf5!
- threat
- 1.f5?
- threat
- 2.Kxh7#
- 1...Qf7+
- 2.Kxf7#
- 1...Qg8+
- 2.Kxg8#
- 1...Bf8+
- 2.Kxf8#
- 1...Bxd3
- 2.Qh4#
- 1...Qd5
- 2.Sc2#
- 1...Qe6
- 2.Sc2#
- 1...Bd6
- 2.Rxc4#
- 1...Be7
- 2.Rxc4#
- 1...Bxf5!
- threat
- 1.Kf6?
- Keys
- 1.Qh4!
- threat
- 2.Qf6#
- 1...Qf7+
- 2.Kxf7#
- 1...Qg8+
- 2.Kxg8#
- 1...Bf8+
- 2.Kxf8#
- 1...Bxd3
- 2.f5#
- 1...Qd5
- 2.Sc2#
- 1...Qe6
- 2.Sc2#
- 1...Bd6
- 2.Rxc4#
- 1...Be7
- 2.Rxc4#
- threat
- 1.Qh4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 4
- Sets
- Q(c);::S(F)
- Q(c);CHECK::B(L)+K(K),XQ(c)
- B(e);::B(L)+K(K),XP(i)
- B(f);OGATE::R1(I),XQ(c)
- B(f);CHECK::B(L)+K(K),XB(f)
- Tries
- Try
- K(K);S_FLIGHT
- Threat
- B(L)+K(K)
- Vars
- Q(c);CHECK::B(L)+K(K),XQ(c)
- B(f);CHECK::B(L)+K(K),XB(f)
- Q(c);::S(F)
- B(f);OGATE::R1(I),XQ(c)
- Refutation
- B(e);P_SPINB(e),XP(E)
- Try
- S(F);CHECK
- Vars
- K(d);P-FLIGHT,P_SPINQ(c)::B(C),XQ(c)
- Refutation
- B(e);XS(F)
- Try
- B(C);XQ(c)
- Threat
- DUALS(3)
- Vars
- B(f);CHECK::B(L)+K(K),XB(f)
- B(f);::S(F)
- Refutation
- B(e);P_SPINB(e),XP(E)
- Try
- R(I);P_SPINS(J),XB(f)
- Threat
- DUALS(3)
- Vars
- Q(c);CHECK,N_PINS(J)::B(L)+K(K),XQ(c)
- Q(c);CHECK::B(L)+K(K),XQ(c)
- Q(c);XB(C)::B(L)+K(K)
- Q(c);XR(I)::S(F)
- B(e);P_SPINB(e),XP(E)::R1(I),XQ(c)
- P(g);XR(I)::B(L)+K(K)
- Q(c);::B(L)+K(K)
- Q(c);::S(F)
- Refutation
- R(h);CHECK,XS(J)
- Try
- Q(B);XP(b)
- Threat
- QAR1(B),XB(e)
- Vars
- Q(c);CHECK::B(L)+K(K),XQ(c)
- B(f);CHECK::B(L)+K(K),XB(f)
- B(e);XQ(B)::B(L)+K(K),XP(i)
- B(e);::S(F)
- Refutation
- P(a);
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- Q(c);CHECK::B(L)+K(K),XQ(c)
- B(f);CHECK::B(L)+K(K),XB(f)
- Q(c);XB(C)::QAB1(B)
- R(h);XB(C)::QAB1(B)
- B(e);P_SPINB(e),XP(E)::QAB1(B)
- P(a);::QAB1(B)
- Q(c);::QAB1(B)
- Q(c);::S(F)
- Refutation
- B(e);
- Try
- P(G);
- Threat
- B(L)+K(K),XP(i)
- Vars
- Q(c);CHECK::B(L)+K(K),XQ(c)
- B(f);CHECK::B(L)+K(K),XB(f)
- B(e);OGATEB,P_SPINB(e),XP(E)::QAR(B)
- Q(c);::S(F)
- B(f);OGATE::R1(I),XQ(c)
- Refutation
- B(e);XP(G)
- Try
- Actual
- Q(B);
- Threat
- QAB(B)
- Vars
- Q(c);CHECK::B(L)+K(K),XQ(c)
- B(f);CHECK::B(L)+K(K),XB(f)
- B(e);P_SPINB(e),XP(E)::QAR(B)+P(G)
- Q(c);::S(F)
- B(f);OGATE::R1(I),XQ(c)
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).