MESON Chess Problem Database
Problem Display
PID: 225451 (3Q4/b1BP4/1nR1P3/1P1k1B2/1P1p3K/5p1n/2qNN3/1r6 w - - 0 1)
Dyachuk, Vasyl Vasilovich
1st HM., Praca, 1997
#2
11 + 8
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qd1
- 2.Be4#
- 2.Rc5#
- 1...Qb3
- 2.Be4#
- 2.Rc5#
- 1...Qd3
- 2.Rc5#
- 1...Qa4
- 2.Be4#
- 2.Rc5#
- 1...Qe4+
- 2.Bxe4#
- 1...Qc1
- 2.Be4#
- 1...Qa2
- 2.Be4#
- 2.Rc5#
- 1...Qb2
- 2.Be4#
- 2.Rc5#
- 1...Qxd2
- 2.Rc5#
- 1...Qc3
- 2.Be4#
- 1...Qc4
- 2.Be4#
- 1...Qc5
- 2.Be4#
- 2.Rxc5#
- 1...Sg1
- 2.Sf4#
- 1...Sf2
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sg5
- 2.Sf4#
- 1...Sxd7
- 2.Qxd7#
- 1...Sc8
- 2.dxc8Q#
- 2.dxc8S#
- 2.dxc8B#
- 2.dxc8R#
- 1...d3
- 2.Be4#
- 1...Qd1
- Tries
- 1.Sc3+?
- 1...Qxc3
- 2.Be4#
- 1...dxc3!
- 1...Qxc3
- 1.Bxc2?
- threat
- 2.Be4#
- 1...Sf2
- 2.Sf4#
- 2.Qg5#
- 1...Sg5
- 2.Sf4#
- 2.Qxg5#
- 1...d3!
- threat
- 1.Qf6?
- threat
- 2.Rd6#
- 2.Qxd4#
- 2.Qe5#
- 1...Qe4+
- 2.Bxe4#
- 1...Qxf5
- 2.Rc5#
- 2.Rd6#
- 2.Qxd4#
- 2.Qxf5#
- 1...Qxd2
- 2.Rc5#
- 2.Qe5#
- 1...Qxc6
- 2.Be4#
- 2.Qxd4#
- 2.Qe5#
- 1...Rxb4
- 2.Qe5#
- 1...Sxd7
- 2.Rd6#
- 1...fxe2
- 2.Rd6#
- 2.Qe5#
- 1...Qd3
- 2.Rc5#
- 2.Rd6#
- 2.Qe5#
- 1...Qb2
- 2.Be4#
- 2.Rc5#
- 2.Rd6#
- 2.Qe5#
- 1...Qc3
- 2.Be4#
- 2.Rd6#
- 2.Qe5#
- 1...Qc4
- 2.Be4#
- 2.Rd6#
- 2.Qe5#
- 1...Qc5
- 2.Be4#
- 2.Rxc5#
- 2.Qe5#
- 1...Sa4
- 2.Rd6#
- 2.Qe5#
- 2.d8Q#
- 2.d8R#
- 1...Sa8
- 2.Rd6#
- 2.Qe5#
- 2.d8Q#
- 2.d8R#
- 1...Sc8
- 2.Qe5#
- 1...d3
- 2.Be4#
- 2.Rd6#
- 2.Qd4#
- 2.Qe5#
- 1...Sc4!
- threat
- 1.Qa8?
- threat
- 2.Rc5#
- 1...Qe4+
- 2.Bxe4#
- 1...Qxf5
- 2.Rxb6#
- 1...Qxc6
- 2.Qxc6#
- 1...Sxa8
- 2.d8Q#
- 2.d8R#
- 1...Qc5
- 2.Be4#
- 2.Rxc5#
- 1...Rxb4!
- threat
- 1.Qg8?
- threat
- 2.e7#
- 1...Qe4+
- 2.Bxe4#
- 1...Qxf5
- 2.Rc5#
- 1...Qxc6
- 2.Be4#
- 1...Sf4
- 2.Sxf4#
- 1...Sg5
- 2.Sf4#
- 1...Rg1!
- threat
- 1.Qh8?
- threat
- 2.Rd6#
- 2.Qxd4#
- 2.Qe5#
- 1...Qe4+
- 2.Bxe4#
- 1...Qxf5
- 2.Rd6#
- 2.Qxd4#
- 1...Qxd2
- 2.Rc5#
- 2.Qe5#
- 1...Qxc6
- 2.Qxd4#
- 2.Qe5#
- 1...Rxb4
- 2.Qe5#
- 1...Sxd7
- 2.Rd6#
- 1...fxe2
- 2.Rd6#
- 2.Qe5#
- 1...Qd3
- 2.Rc5#
- 2.Rd6#
- 2.Qe5#
- 1...Qb2
- 2.Be4#
- 2.Rc5#
- 2.Rd6#
- 2.Qe5#
- 1...Qc3
- 2.Be4#
- 2.Rd6#
- 2.Qe5#
- 1...Qc4
- 2.Be4#
- 2.Rd6#
- 2.Qe5#
- 1...Qc5
- 2.Be4#
- 2.Rxc5#
- 2.Qe5#
- 1...Sa4
- 2.Rd6#
- 2.Qe5#
- 2.d8Q#
- 2.d8R#
- 1...Sa8
- 2.Rd6#
- 2.Qe5#
- 2.d8Q#
- 2.d8R#
- 1...Sc8
- 2.Qe5#
- 1...d3
- 2.Be4#
- 2.Rd6#
- 2.Qd4#
- 2.Qe5#
- 1...Sc4!
- threat
- 1.Sc3+?
- Keys
- 1.Qg5!
- threat
- 2.Be4#
- 1...Qe4+
- 2.Bxe4#
- 1...Qxf5
- 2.Qxf5#
- 1...Qxd2
- 2.Rc5#
- 1...Qxc6
- 2.Bxh3#
- 1...Sxg5
- 2.Sf4#
- threat
- 1.Qg5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 9
- Sets
- Q(b);N_GUARD::R1(G)
- Q(b);CHECK,N_GUARD::B(F),XQ(b)
- Q(b);N_GUARD::B(F)
- Q(b);N_GUARD,XS(A)::R1(G)
- S(d);N_GUARD::S(B)
- S(d);N_GUARD::S(B),XS(d)
- S(g);OGATE,P_SPINS(g),XP(J)::QAR2(K),XS(g)
- P(e);S_CUTQ(b)::B(F)
- Tries
- Try
- S(B);CHECK
- Vars
- Q(b);XS(B)::B(F)
- Refutation
- P(e);XS(B)
- Try
- B(F);XQ(b)
- Threat
- B(F)
- Refutation
- P(e);
- Try
- Q(K);
- Threat
- DUALS(3)
- Vars
- Q(b);CHECK,N_GUARD::B(F),XQ(b)
- R(a);XP(C)::QAR1(K)
- S(g);XP(J)::R1(G)
- S(g);::QAR1(K)
- Refutation
- S(g);
- Try
- Q(K);
- Threat
- QAB(K)+R(G),DCHECK
- Vars
- Q(b);CHECK,N_GUARD::B(F),XQ(b)
- Q(b);N_GUARD,XB(F)::QAB(K)+R(G),XS(g)
- Q(b);OGATE,P_SPINQ(b),XR(G)::QAB1(K),XQ(b)
- S(g);N_GUARD,XQ(K)::P=Q
- Refutation
- R(a);XP(C)
- Try
- Q(K);
- Threat
- QAB(K)+P(H)
- Vars
- Q(b);CHECK,N_GUARD::B(F),XQ(b)
- Q(b);N_GUARD,XB(F)::R1(G)
- Q(b);N_GUARD,XR(G)::B(F)
- S(d);N_GUARD::S(B),XS(d)
- S(d);N_GUARD::S(B)
- Refutation
- R(a);
- Try
- Q(K);
- Threat
- DUALS(3)
- Vars
- Q(b);CHECK,N_GUARD::B(F),XQ(b)
- R(a);XP(C)::QAR1(K)
- S(g);XP(J)::R1(G)
- S(g);::QAR1(K)
- Refutation
- S(g);
- Try
- Actual
- Q(K);
- Threat
- QAR(K)+B(F),DCHECK
- Vars
- Q(b);CHECK::QAR(K)+B(F),DCHECK,XQ(b)
- Q(b);OGATE,P_SPINQ(b),XB(F)::QAR2(K),XQ(b)
- Q(b);N_GUARD,XS(A)::R1(G)
- Q(b);N_GUARD,XR(G)::QAR(K)+B(F),XS(d)
- S(d);N_GUARD,XQ(K)::S(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).