MESON Chess Problem Database
Problem Display
PID: 81609 (q7/nrPNP1PP/6QK/1p4R1/pRnkNB2/8/2PP4/b3r2b w - - 0 1)
Shanshin, Valery Yurevich
9th HM., The Problemist, 2008
#2
13 + 10
| 56 | The Problemist | 2009 |
| 5454 | Near Snap | 2024 |
SOLUTION
- SOUND
- Sets
- 1...Qh8
- 2.gxh8Q#
- 2.gxh8B#
- 1...Rb1
- 2.Be3#
- 1...Rc1
- 2.Be3#
- 1...Rd1
- 2.Be3#
- 1...Rf1
- 2.Be3#
- 1...Rg1
- 2.Be3#
- 1...Re3
- 2.Bxe3#
- 2.dxe3#
- 1...Rxe4
- 2.Qd6#
- 1...Bc3
- 2.dxc3#
- 1...Bxe4
- 2.Qf6#
- 1...Qh8
- Tries
- 1.Sf2?
- threat
- 2.Qd3#
- 1...Re3
- 2.Bxe3#
- 1...Re4
- 2.Qd6#
- 1...Rb6
- 2.Qxb6#
- 1...Be4
- 2.Qf6#
- 1...Re6!
- threat
- 1.Sc3?
- threat
- 2.Qd3#
- 1...Re3
- 2.Bxe3#
- 1...Re4
- 2.Rd5#
- 2.Qd6#
- 1...Rb6
- 2.Qxb6#
- 1...Be4
- 2.Be5#
- 2.Qf6#
- 1...Re6!
- threat
- 1.Sg3?
- threat
- 2.Qd3#
- 1...Re3
- 2.Bxe3#
- 1...Re4
- 2.Qd6#
- 1...Rb6
- 2.Qxb6#
- 1...Be4
- 2.Qf6#
- 1...Re6!
- threat
- 1.Sec5?
- threat
- 2.Qd3#
- 1...Re6
- 2.Sxe6#
- 1...Re3
- 2.Bxe3#
- 1...Re4
- 2.Qd6#
- 1...Be4
- 2.Se6#
- 2.Qf6#
- 1...Rb6!
- threat
- 1.Sdc5?
- threat
- 2.Se6#
- 2.Qd6#
- 2.Qf6#
- 1...Rxe4
- 2.Qd6#
- 1...Rxc7
- 2.Se6#
- 2.Qf6#
- 1...Bxe4
- 2.Se6#
- 2.Qf6#
- 1...Qc8
- 2.Qd6#
- 2.Qf6#
- 1...Qd8
- 2.Se6#
- 2.Qf6#
- 2.exd8Q#
- 2.exd8R#
- 1...Qf8
- 2.Se6#
- 2.Qd6#
- 1...Qg8
- 2.Qf6#
- 1...Rb8
- 2.Se6#
- 2.Qf6#
- 1...Sc6
- 2.Se6#
- 2.Qd6#
- 1...Sc8
- 2.Se6#
- 2.Qf6#
- 1...Rb6!
- threat
- 1.Sb6?
- threat
- 2.Be5#
- 2.Rd5#
- 1...Rxe4
- 2.Rd5#
- 2.Qd6#
- 1...Rxc7
- 2.Be5#
- 1...Bxe4
- 2.Qf6#
- 1...Qd8
- 2.Be5#
- 2.exd8Q#
- 2.exd8R#
- 1...Qg8
- 2.Be5#
- 1...Rb8
- 2.Be5#
- 1...Sc6
- 2.Rd5#
- 1...Rxb6!
- threat
- 1.Sdf6?
- threat
- 2.Be5#
- 2.Rd5#
- 1...Rxe4
- 2.Rd5#
- 1...Rxc7
- 2.Be5#
- 1...Qd8
- 2.Be5#
- 2.exd8Q#
- 2.exd8R#
- 1...Qg8
- 2.Be5#
- 1...Rb6
- 2.Be5#
- 1...Rb8
- 2.Be5#
- 1...Sc6
- 2.Rd5#
- 1...Bxe4!
- threat
- 1.Rc5?
- threat
- 2.Be5#
- 1...Rxe4
- 2.Qd6#
- 1...Sc6!
- threat
- 1.Qf5?
- threat
- 2.Qd5#
- 2.Qe5#
- 1...Rxe4
- 2.Qc5#
- 2.Qd5#
- 1...Rxc7
- 2.Qe5#
- 1...Bxe4
- 2.Qc5#
- 2.Qe5#
- 2.Qf6#
- 1...Qg8
- 2.Qe5#
- 1...Rb8
- 2.Qe5#
- 1...Sc6
- 2.Qd5#
- 1...Rb6+!
- threat
- 1.Qc6?
- threat
- 2.Be5#
- 2.Qd5#
- 1...Rxe4
- 2.Rd5#
- 2.Qd5#
- 2.Qc5#
- 2.Qd6#
- 1...Rxc7
- 2.Be5#
- 1...Bxe4
- 2.Be5#
- 2.Qc5#
- 2.Qf6#
- 1...Qg8
- 2.Be5#
- 1...Rb6
- 2.Be5#
- 1...Rb8
- 2.Be5#
- 1...Sxc6!
- threat
- 1.Qe6?
- threat
- 2.Rd5#
- 2.Qd5#
- 2.Qe5#
- 1...Rxe4
- 2.Rd5#
- 2.Qd5#
- 2.Qd6#
- 1...Rxc7
- 2.Qe5#
- 1...Bxe4
- 2.Be5#
- 2.Qe5#
- 2.Qf6#
- 1...Qg8
- 2.Rd5#
- 2.Qe5#
- 1...Rb8
- 2.Qe5#
- 1...Sc6
- 2.Rd5#
- 2.Qd5#
- 1...Rb6!
- threat
- 1.d3?
- threat
- 2.Qd6#
- 2.Qf6#
- 1...Rxc7
- 2.Qf6#
- 1...Bxe4
- 2.Qf6#
- 1...Qf8
- 2.Qd6#
- 1...Qg8
- 2.Qf6#
- 1...Rb6
- 2.Qxb6#
- 1...Rb8
- 2.Qf6#
- 1...Sc6
- 2.Qd6#
- 1...Sc8
- 2.Qf6#
- 1...Rxe4!
- threat
- 1.e8Q?
- threat
- 2.Qd6#
- 2.Qf6#
- 2.Qe5#
- 1...Rxe4
- 2.Qd6#
- 1...Rxc7
- 2.Qf6#
- 2.Qe5#
- 1...Bxe4
- 2.Qf6#
- 2.Qe5#
- 1...Qd8
- 2.Qd6#
- 2.Qe5#
- 1...Rb6
- 2.Qxb6#
- 2.Qe5#
- 1...Rb8
- 2.Qf6#
- 2.Qe5#
- 1...Sc6
- 2.Qd6#
- 1...Sc8
- 2.Qf6#
- 2.Qe5#
- 1...Qxe8!
- threat
- 1.e8R?
- threat
- 2.Qd6#
- 2.Qf6#
- 1...Rxe4
- 2.Qd6#
- 1...Rxc7
- 2.Qf6#
- 1...Bxe4
- 2.Qf6#
- 1...Qd8
- 2.Qd6#
- 1...Rb6
- 2.Qxb6#
- 1...Rb8
- 2.Qf6#
- 1...Sc6
- 2.Qd6#
- 1...Sc8
- 2.Qf6#
- 1...Qxe8!
- threat
- 1.Sf2?
- Keys
- 1.Sef6!
- threat
- 2.Qd3#
- 1...Re3
- 2.Bxe3#
- 1...Re4
- 2.Rd5#
- 1...Be4
- 2.Be5#
- threat
- 1.Sef6!
Anticipated by 275022(1985)
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 6
- Sets
- Q(j);OGATE,P_PINP(M)::PXQ(j)=Q
- R(b);N_GUARD::B(E)
- R(b);SBLOCK,XS(D)::QAR2(G)
- B(a);OGATE::P(B),XB(a)
- B(c);SBLOCK,XS(D)::QAB(G)
- Tries
- Try
- S(D);
- Threat
- QAR1(G)
- Vars
- R(b);N_GUARD::B(E),XR(b)
- R(b);S_CUTB(c)::QAR2(G)
- R(i);N_GUARD,P_PINQ(G)::QAB(G),XR(i)
- B(c);S_CUTR(b)::QAB(G)
- Refutation
- R(b);P_PINQ(G)
- Try
- S(D);
- Threat
- QAR1(G)
- Vars
- R(b);N_GUARD::B(E),XR(b)
- R(i);N_GUARD,P_PINQ(G)::QAB(G),XR(i)
- Refutation
- R(b);P_PINQ(G)
- Try
- S(D);
- Threat
- QAR1(G)
- Vars
- R(b);N_GUARD::B(E),XR(b)
- R(b);S_CUTB(c)::QAR2(G)
- R(i);N_GUARD,P_PINQ(G)::QAB(G),XR(i)
- B(c);S_CUTR(b)::QAB(G)
- Refutation
- R(b);P_PINQ(G)
- Try
- S(D);
- Threat
- QAR1(G)
- Vars
- R(b);N_GUARD,P_PINQ(G)::S(D),XR(b)
- R(b);N_GUARD::B(E),XR(b)
- R(b);S_CUTB(c)::QAR2(G)
- Refutation
- R(i);P_PINQ(G)
- Try
- S(J);
- Threat
- DUALS(3)
- Vars
- R(b);XS(D)::QAR2(G)
- Q(j);::QAB(G)
- Refutation
- R(i);P_PINQ(G)
- Try
- S(J);
- Threat
- DUALS(2)
- Vars
- R(i);XP(I)::B(E)
- B(c);SBLOCK,XS(D)::QAB(G)
- Q(j);::B(E)
- R(i);::B(E)
- S(h);::R1(F)
- Refutation
- R(i);P_PINQ(G),XS(J)
- Try
- S(J);
- Threat
- DUALS(2)
- Vars
- R(b);XS(D)::R1(F)
- R(i);XP(I)::B(E)
- Q(j);::B(E)
- R(i);::B(E)
- S(h);::R1(F)
- Refutation
- B(c);XS(D)
- Try
- R(F);
- Threat
- B(E)
- Vars
- R(b);SBLOCK,XS(D)::QAR2(G)
- Refutation
- S(h);
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- R(i);XP(I)::QAB1(G)
- Q(j);::QAB1(G)
- R(i);::QAB1(G)
- S(h);::QAR1(G)
- Refutation
- R(i);CHECK
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- R(i);XP(I)::B(E)
- Q(j);::B(E)
- R(i);P_PINQ(G)::B(E)
- R(i);::B(E)
- Refutation
- S(h);XQ(G)
- Try
- Q(G);
- Threat
- DUALS(3)
- Vars
- R(i);XP(I)::QAB1(G)
- R(i);::QAB1(G)
- Refutation
- R(i);P_PINQ(G)
- Try
- P(B);
- Threat
- DUALS(2)
- Vars
- R(i);XP(I)::QAB(G)
- B(c);XS(D)::QAB(G)
- Q(j);P_PINP(L)::QAR2(G)
- Q(j);::QAB(G)
- R(i);N_GUARD,P_PINQ(G)::QAB(G),XR(i)
- R(i);::QAB(G)
- S(h);::QAR2(G)
- S(h);::QAB(G)
- Refutation
- R(b);XS(D)
- Try
- P(K);
- Threat
- DUALS(3)
- Vars
- R(b);XS(D)::QAR2(G)
- S(h);::QAR2(G)
- Refutation
- Q(j);XQ(K)
- Try
- P(K);
- Threat
- DUALS(2)
- Vars
- R(b);XS(D)::QAR2(G)
- R(i);XP(I)::QAB(G)
- B(c);XS(D)::QAB(G)
- Q(j);::QAR2(G)
- R(i);N_GUARD,P_PINQ(G)::QAB(G),XR(i)
- R(i);::QAB(G)
- S(h);::QAR2(G)
- S(h);::QAB(G)
- Refutation
- Q(j);XR(K)
- Try
- Actual
- S(D);
- Threat
- QAR1(G)
- Vars
- R(b);N_GUARD::B(E),XR(b)
- R(b);S_CUTB(c)::R1(F)
- B(c);S_CUTR(b)::B(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).