MESON Chess Problem Database
Problem Display
PID: 56335 (N4B2/K3P2r/2pk3r/1P3Q2/npPN1Pn1/5p1B/5q2/3RR3 w - - 0 1)
Shanshin, Valery Yurevich
6th Prize, Dombrovskis MT, 2002
#2
12 + 9
| 56 | The Problemist | 2004 |
| 15174 | FIDE Album (2001-2003) | 2011 |
| 136 | Problem Observer | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Qg3
- 2.Sc2#
- 2.Se2#
- 2.Sb3#
- 2.Sxf3#
- 2.Sxc6#
- 2.Se6#
- 1...Qxd4+
- 2.Rxd4#
- 1...Qh4
- 2.Sc2#
- 2.Se2#
- 2.Sb3#
- 2.Sxf3#
- 2.Sxc6#
- 2.Se6#
- 1...Qf1
- 2.Se2#
- 1...Qa2
- 2.Sc2#
- 1...Qc2
- 2.Sxc2#
- 1...Qe2
- 2.Sxe2#
- 1...Qg2
- 2.Se2#
- 1...Qh2
- 2.Se2#
- 1...Rxe7+
- 2.Bxe7#
- 1...Rh8
- 2.e8S#
- 1...Sb2
- 2.c5#
- 1...Sc3
- 2.c5#
- 1...Sb6
- 2.c5#
- 1...Sh2
- 2.Qe5#
- 1...Se3
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sf6
- 2.Qe5#
- 1...cxb5
- 2.Qd5#
- 1...c5
- 2.Qd5#
- 1...Qg3
- Tries
- 1.Kb8?
- threat
- 2.e8S#
- 1...Rxe7
- 2.Bxe7#
- 1...Re6!
- threat
- 1.Re6+?
- 1...Kd7
- 2.e8Q#
- 1...Rxe6!
- 1...Kd7
- 1.Qe6+?
- 1...Kc5
- 2.Sb3#
- 1...Rxe6!
- 1...Kc5
- 1.Qd7+?
- 1...Kxd7
- 2.e8Q#
- 1...Kc5!
- 1...Kxd7
- 1.Qc5+?
- 1...Kd7
- 2.e8Q#
- 1...Sxc5
- 2.Sf5#
- 1...Kxc5!
- 1...Kd7
- 1.Qe5+?
- 1...Kd7
- 2.e8Q#
- 1...Sxe5!
- 1...Kd7
- 1.bxc6?
- threat
- 2.Qd5#
- 1...Rxe7+
- 2.Bxe7#
- 1...Se5
- 2.Qxe5#
- 1...Rh5
- 2.Re6#
- 1...Sc3
- 2.c5#
- 1...Sb6
- 2.c5#
- 1...Se3
- 2.Qe5#
- 1...Sf6
- 2.Re6#
- 2.Qe5#
- 1...Qxd4+!
- threat
- 1.b6?
- threat
- 2.Sb5#
- 1...Rxe7+
- 2.Bxe7#
- 1...Qxd4
- 2.Rxd4#
- 1...Se5
- 2.Qxe5#
- 1...c5
- 2.Qd5#
- 1...Qd2!
- threat
- 1.Kb8?
- Keys
- 1.Qe4!
- threat
- 2.Qxc6#
- 1...Qxd4+
- 2.Qxd4#
- 1...Rxe7+
- 2.Qxe7#
- 1...Kc5
- 2.Sb3#
- 1...Kd7
- 2.e8Q#
- 1...cxb5
- 2.Qd5#
- 2.Qc6#
- 1...Se5
- 2.Qxe5#
- 1...c5
- 2.Sf5#
- 2.Qd5#
- 2.Qc6#
- threat
- 1.Qe4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 2
- REMOVED MATES = 15
- Sets
- Q(a);CHECK,OGATE,P_SPINQ(a),XS(E)::R(A),XQ(a)
- Q(a);N_PINS(E)::R(A)+S(E)
- Q(a);N_PINS(E)::R(A)+S(E),XQ(a)
- R(i);CHECK,OGATE,P_SPINR(i),XP(J)::B(L),XR(i)
- R(i);N_PINP(J)::P=S
- S(c);N_GUARD::P(D)
- S(c);N_GUARD,N_PINS(E)::P(D)
- S(e);N_GUARD::QAB1(H)
- S(e);N_GUARD,N_PINS(E)::QAB1(H)
- S(e);N_GUARD::QAB1(H),XS(e)
- P(f);N_GUARD,XP(G)::QAR1(H)
- P(f);N_GUARD,N_PINS(E)::QAR1(H)
- Tries
- Try
- K(I);N_SPINP(J),N_SPINS(E),S_FLIGHT
- Threat
- P=S
- Vars
- R(i);OGATE,P_SPINR(i),XP(J)::B(L),XR(i)
- Refutation
- R(h);
- Try
- R(B);CHECK
- Vars
- K(g);N_PINP(J),P-FLIGHT::P=Q
- Refutation
- R(h);XR(B)
- Try
- Q(H);CHECK
- Vars
- K(g);N_PINS(E),S_FLIGHT::S(E)
- Refutation
- R(h);XQ(H)
- Try
- Q(H);CHECK,N_SPINP(J)
- Vars
- K(g);P-FLIGHT,P_SPINS(e),XQ(H)::P=Q
- Refutation
- K(g);N_PINS(E),S_FLIGHT
- Try
- Q(H);CHECK,N_SPINS(E)
- Vars
- K(g);N_PINP(J),P-FLIGHT,P_SPINS(e)::P=Q
- S(c);SBLOCK,XQ(H)::R(A)+S(E),DCHECK
- Refutation
- K(g);S_FLIGHT,XQ(H)
- Try
- Q(H);CHECK
- Vars
- K(g);N_PINP(J),P-FLIGHT,P_SPINS(e)::P=Q
- Refutation
- S(e);XQ(H)
- Try
- P(G);XP(f)
- Threat
- QAR1(H)
- Vars
- R(i);CHECK,OGATE,P_SPINR(i),XP(J)::B(L),XR(i)
- S(e);N_GUARD::QAB1(H),XS(e)
- R(h);N_GUARD::R1(B)
- S(c);N_GUARD::P(D)
- S(c);N_GUARD,N_PINS(E)::P(D)
- S(e);N_GUARD,N_PINS(E)::QAB1(H)
- Refutation
- Q(a);CHECK,P_SPINQ(a),XS(E)
- Try
- P(G);N_SPINS(E)
- Threat
- R(A)+S(E),DCHECK
- Vars
- R(i);CHECK,OGATE,P_SPINR(i),XP(J)::B(L),XR(i)
- Q(a);N_PINP(J),OGATE,P_PINP(G),P_SPINQ(a),XS(E)::R(A),XQ(a)
- S(e);N_GUARD::QAB1(H),XS(e)
- P(f);N_GUARD::QAR1(H)
- Refutation
- Q(a);
- Try
- Actual
- Q(H);
- Threat
- QAR1(H),XP(f)
- Vars
- Q(a);CHECK,OGATE,P_SPINQ(a),XS(E)::QAR2(H),XQ(a)
- R(i);CHECK,OGATE,P_SPINR(i),XP(J)::QAB1(H),XR(i)
- K(g);N_PINS(E),S_FLIGHT::S(E)
- K(g);N_PINP(J),P-FLIGHT,P_SPINS(e)::P=Q
- S(e);N_GUARD::QAB1(H),XS(e)
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).