MESON Chess Problem Database
Problem Display
PID: 187052 (4R3/K1P2p1r/1p2Npp1/1B1kP3/NP3R2/1pB4p/1n6/1Q4qb w - - 0 1)
Shanshin, Valery Yurevich
The Problemist Supplement, 2018
#2
11 + 11
SOLUTION
- SOUND
- Sets
- 1...Qh2
- 2.Sxb6#
- 1...Qc5
- 2.Qxh1#
- 1...Qxb1
- 2.Sxb6#
- 1...Qc1
- 2.Sxb6#
- 1...Qd1
- 2.Sxb6#
- 1...Qe1
- 2.Sxb6#
- 1...Qf1
- 2.Sxb6#
- 1...Qg2
- 2.Sxb6#
- 1...Qg3
- 2.Sxb6#
- 1...Qg4
- 2.Sxb6#
- 1...Qg5
- 2.Sxb6#
- 1...Be4
- 2.Qxe4#
- 1...Sd1
- 2.Qxb3#
- 1...Sd3
- 2.Qxb3#
- 1...Sxa4
- 2.Qxb3#
- 1...Qh2
- Tries
- 1.Sec5?
- threat
- 2.Sxb6#
- 2.Rd8#
- 1...Qxc5
- 2.Qxh1#
- 1...Sxa4
- 2.Rd8#
- 2.Qxb3#
- 1...bxc5
- 2.Sb6#
- 1...fxe5
- 2.Rd8#
- 1...Qd4
- 2.Sxb6#
- 2.Rxd4#
- 1...Qg4
- 2.Sxb6#
- 1...Rh8
- 2.Sxb6#
- 1...Sc4!
- threat
- 1.Sd8?
- threat
- 2.Bc6#
- 1...Qd4
- 2.Rxd4#
- 1...Qc5
- 2.Qxh1#
- 1...Be4
- 2.Qxe4#
- 1...fxe5!
- threat
- 1.Sf8?
- threat
- 2.Rd8#
- 1...Qd4
- 2.Rxd4#
- 1...Qc5
- 2.Qxh1#
- 1...Qg4
- 2.Sxb6#
- 1...Sc4!
- threat
- 1.Bc4+?
- 1...Kc6
- 2.c8Q#
- 1...Sxc4!
- 1...Kc6
- 1.Rd4+?
- 1...Kxe5
- 2.Sf4#
- 2.Sec5#
- 2.Sg5#
- 2.Sg7#
- 2.Sd8#
- 2.Sf8#
- 1...Qxd4!
- 1...Kxe5
- 1.Qd3+?
- 1...Qd4
- 2.Qxd4#
- 1...Sxd3!
- 1...Qd4
- 1.Qd1+?
- 1...Qd4
- 2.Qxd4#
- 1...Qxd1
- 2.Sxb6#
- 1...Sd3
- 2.Qxb3#
- 1...Sxd1!
- 1...Qd4
- 1.Qxg1?
- threat
- 2.Sxb6#
- 2.Qd4#
- 2.Qxh1#
- 1...Sxa4
- 2.Qd4#
- 2.Qd1#
- 2.Qxh1#
- 1...Sc4
- 2.Qd4#
- 2.Qxh1#
- 1...Bg2
- 2.Sxb6#
- 2.Qd4#
- 1...Bf3
- 2.Sxb6#
- 2.Qd4#
- 1...Be4
- 2.Sxb6#
- 2.Qd4#
- 1...fxe5!
- threat
- 1.c8Q?
- threat
- 2.Sc7#
- 2.Bc6#
- 2.Rd8#
- 2.Qb7#
- 2.Qd7#
- 2.Qc6#
- 2.Qa8#
- 2.Qd8#
- 1...fxe5
- 2.Rd8#
- 2.Qd7#
- 2.Qc6#
- 2.Qd8#
- 1...Qd4
- 2.Sc7#
- 1...Sc4
- 2.Sc7#
- 2.Bxc4#
- 2.Bc6#
- 2.Qb7#
- 2.Qxc4#
- 2.Qc6#
- 2.Qa8#
- 1...Qc5
- 2.Qxh1#
- 1...Rh8
- 2.Sc7#
- 2.Bc6#
- 2.Qb7#
- 2.Qd7#
- 2.Qc6#
- 2.Qa8#
- 2.Qd8#
- 1...Be4
- 2.Sc7#
- 2.Rd8#
- 2.Qxe4#
- 2.Qb7#
- 2.Qd7#
- 2.Qc6#
- 2.Qa8#
- 2.Qd8#
- 1...fxe6+!
- threat
- 1.c8S?
- threat
- 2.Sc7#
- 1...Qc5
- 2.Qxh1#
- 1...fxe6+!
- threat
- 1.c8B?
- threat
- 2.Sc7#
- 2.Bb7#
- 2.Rd8#
- 1...fxe5
- 2.Rd8#
- 1...Qd4
- 2.Sc7#
- 1...Sc4
- 2.Sc7#
- 2.Bb7#
- 1...Qc5
- 2.Qxh1#
- 1...Rh8
- 2.Sc7#
- 2.Bb7#
- 1...fxe6+!
- threat
- 1.c8R?
- threat
- 2.Sc7#
- 2.Bc6#
- 2.Rcd8#
- 1...fxe5
- 2.Rcd8#
- 1...Qd4
- 2.Sc7#
- 1...Sc4
- 2.Sc7#
- 2.Bxc4#
- 2.Bc6#
- 1...Qc5
- 2.Qxh1#
- 1...Be4
- 2.Sc7#
- 2.Rcd8#
- 2.Qxe4#
- 1...fxe6+!
- threat
- 1.Sec5?
- Keys
- 1.Sd4!
- threat
- 2.Sxb6#
- 1...Qxd4
- 2.Rxd4#
- 1...Sxa4
- 2.Qxb3#
- 1...fxe5
- 2.Rd8#
- 1...Sc4
- 2.Bc6#
- threat
- 1.Sd4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 14
- Sets
- Q(a);N_GUARD::S(C),XP(g)
- Q(a);OGATE::QAB(A),XB(b)
- Q(a);N_GUARD,XQ(A)::S(C),XP(g)
- B(b);N_GUARD::QAB1(A),XB(b)
- S(c);OGATE::QAB(A),XP(d)
- S(c);OGATE,XS(C)::QAB(A),XP(d)
- Tries
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- Q(a);OGATE,XS(H)::QAB(A),XB(b)
- P(g);XS(H)::S(C)
- P(h);XP(G)::R(K)
- Q(a);::S(C),XP(g)
- R(k);::S(C),XP(g)
- Refutation
- S(c);
- Try
- S(H);
- Threat
- B(F)
- Vars
- Q(a);N_GUARD::R1(E),XQ(a)
- Q(a);OGATE::QAB(A),XB(b)
- B(b);N_GUARD::QAB1(A),XB(b)
- Refutation
- P(h);XP(G)
- Try
- S(H);
- Threat
- R(K)
- Vars
- Q(a);N_GUARD::R1(E),XQ(a)
- Q(a);OGATE::QAB(A),XB(b)
- Q(a);N_GUARD::S(C),XP(g)
- Refutation
- S(c);
- Try
- B(F);CHECK
- Vars
- K(f);S_FLIGHT::P=Q
- Refutation
- S(c);XB(F)
- Try
- R(E);CHECK
- Refutation
- Q(a);XR(E)
- Try
- Q(A);CHECK
- Vars
- Q(a);N_GUARD,P_SPINQ(a)::QAR1(A),XQ(a)
- Refutation
- S(c);XQ(A)
- Try
- Q(A);CHECK
- Vars
- Q(a);N_GUARD,P_SPINQ(a)::QAR1(A),XQ(a)
- Q(a);XQ(A)::S(C),XP(g)
- S(c);N_GUARD,P_SPINS(c)::QAB(A),XP(d)
- Refutation
- S(c);XQ(A)
- Try
- Q(A);XQ(a)
- Threat
- DUALS(3)
- Refutation
- P(h);XP(G)
- Try
- P(J);
- Threat
- DUALS(8)
- Vars
- Q(a);::S(H)
- Q(a);OGATE::QAB(A),XB(b)
- Refutation
- P(j);CHECK,XS(H)
- Try
- P(J);
- Threat
- S(H)
- Vars
- Q(a);OGATE::QAB(A),XB(b)
- Refutation
- P(j);CHECK,XS(H)
- Try
- P(J);
- Threat
- DUALS(3)
- Vars
- P(h);XP(G)::R(K)
- Q(a);::S(H)
- Q(a);OGATE::QAB(A),XB(b)
- Refutation
- P(j);CHECK,XS(H)
- Try
- P(J);
- Threat
- DUALS(3)
- Vars
- P(h);XP(G)::R(J)
- Q(a);::S(H)
- Q(a);OGATE::QAB(A),XB(b)
- Refutation
- P(j);CHECK,XS(H)
- Try
- Actual
- S(H);
- Threat
- S(C),XP(g)
- Vars
- Q(a);OGATE,XS(H)::R1(E),XQ(a)
- S(c);OGATE,XS(C)::QAB(A),XP(d)
- P(h);SBLOCK,XP(G)::R(K)
- S(c);SBLOCK::B(F)
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).