MESON Chess Problem Database
Problem Display
PID: 265296 (4n3/3BP3/3P4/2PkBN1R/NR3P2/K2b2r1/P1pQp3/2r3b1 w - - 0 1)
Shanshin, Valery Yurevich
1st Prize, Polski Zwiazek Szachowy, 2015
(First published on Tue Apr 14 2015)
#2
13 + 8
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Re3
- 2.Rd4#
- 1...Bh2
- 2.Rd4#
- 1...Bd4
- 2.Rxd4#
- 1...Bxc5
- 2.Sc3#
- 1...Re3
- Tries
- 1.Se3+?
- 1...Rxe3
- 2.Rd4#
- 1...Bxe3!
- 1...Rxe3
- 1.Ba1?
- threat
- 2.Se3#
- 2.Sxg3#
- 1...Bxc5
- 2.Sc3#
- 1...Sxd6
- 2.Se3#
- 1...Bd4
- 2.Rxd4#
- 1...e1Q
- 2.Se3#
- 1...e1R
- 2.Se3#
- 1...Rg2
- 2.Se3#
- 2.Sg3#
- 1...Re3
- 2.Sxe3#
- 2.Rd4#
- 1...Rf3
- 2.Se3#
- 2.Sg3#
- 2.Sh4#
- 2.Sh6#
- 2.Sg7#
- 1...Rh3
- 2.Se3#
- 2.Sh4#
- 1...Rg4
- 2.Se3#
- 1...Rg6
- 2.Se3#
- 1...Rg7
- 2.Se3#
- 2.Sxg7#
- 1...Rg8
- 2.Se3#
- 2.Sg7#
- 1...Be3
- 2.Sxe3#
- 2.Sxg3#
- 1...Sf6
- 2.Se3#
- 1...Sg7
- 2.Se3#
- 1...Rg5!
- threat
- 1.Bb2?
- threat
- 2.Se3#
- 2.Sxg3#
- 1...Bxc5
- 2.Sc3#
- 1...Sxd6
- 2.Se3#
- 1...Bd4
- 2.Rxd4#
- 1...e1Q
- 2.Se3#
- 1...e1R
- 2.Se3#
- 1...Rg2
- 2.Se3#
- 2.Sg3#
- 1...Re3
- 2.Sxe3#
- 2.Rd4#
- 1...Rf3
- 2.Se3#
- 2.Sg3#
- 2.Sh4#
- 2.Sh6#
- 2.Sg7#
- 1...Rh3
- 2.Se3#
- 2.Sh4#
- 1...Rg4
- 2.Se3#
- 1...Rg6
- 2.Se3#
- 1...Rg7
- 2.Se3#
- 2.Sxg7#
- 1...Rg8
- 2.Se3#
- 2.Sg7#
- 1...Be3
- 2.Sxe3#
- 2.Sxg3#
- 1...Sf6
- 2.Se3#
- 1...Sg7
- 2.Se3#
- 1...Rg5!
- threat
- 1.Bf6?
- threat
- 2.Se3#
- 2.Sxg3#
- 1...Bxc5
- 2.Sc3#
- 1...Sxd6
- 2.Se3#
- 1...Sxf6
- 2.Se3#
- 1...Bd4
- 2.Rxd4#
- 1...e1Q
- 2.Se3#
- 1...e1R
- 2.Se3#
- 1...Rg2
- 2.Se3#
- 2.Sg3#
- 1...Re3
- 2.Sxe3#
- 2.Rd4#
- 1...Rf3
- 2.Se3#
- 2.Sg3#
- 2.Sh4#
- 2.Sh6#
- 2.Sg7#
- 1...Rh3
- 2.Se3#
- 2.Sh4#
- 1...Rg4
- 2.Se3#
- 1...Rg6
- 2.Se3#
- 1...Rg7
- 2.Se3#
- 2.Sxg7#
- 1...Rg8
- 2.Se3#
- 2.Sg7#
- 1...Be3
- 2.Sxe3#
- 2.Sxg3#
- 1...Sg7
- 2.Se3#
- 1...Rg5!
- threat
- 1.Bg7?
- threat
- 2.Se3#
- 2.Sxg3#
- 1...Rxg7
- 2.Se3#
- 2.Sxg7#
- 1...Bxc5
- 2.Sc3#
- 1...Sxd6
- 2.Se3#
- 1...Sxg7
- 2.Se3#
- 1...Bd4
- 2.Rxd4#
- 1...e1Q
- 2.Se3#
- 1...e1R
- 2.Se3#
- 1...Rg2
- 2.Se3#
- 2.Sg3#
- 1...Re3
- 2.Sxe3#
- 2.Rd4#
- 1...Rf3
- 2.Se3#
- 2.Sg3#
- 2.Sh4#
- 2.Sh6#
- 1...Rh3
- 2.Se3#
- 2.Sh4#
- 1...Rg4
- 2.Se3#
- 1...Rg6
- 2.Se3#
- 1...Be3
- 2.Sxe3#
- 2.Sxg3#
- 1...Sf6
- 2.Se3#
- 1...Rg5!
- threat
- 1.Bh8?
- threat
- 2.Se3#
- 2.Sxg3#
- 1...Bxc5
- 2.Sc3#
- 1...Sxd6
- 2.Se3#
- 1...Bd4
- 2.Rxd4#
- 1...e1Q
- 2.Se3#
- 1...e1R
- 2.Se3#
- 1...Rg2
- 2.Se3#
- 2.Sg3#
- 1...Re3
- 2.Sxe3#
- 2.Rd4#
- 1...Rf3
- 2.Se3#
- 2.Sg3#
- 2.Sh4#
- 2.Sh6#
- 2.Sg7#
- 1...Rh3
- 2.Se3#
- 2.Sh4#
- 1...Rg4
- 2.Se3#
- 1...Rg6
- 2.Se3#
- 1...Rg7
- 2.Se3#
- 2.Sxg7#
- 1...Rg8
- 2.Se3#
- 2.Sg7#
- 1...Be3
- 2.Sxe3#
- 2.Sxg3#
- 1...Sf6
- 2.Se3#
- 1...Sg7
- 2.Se3#
- 1...Rg5!
- threat
- 1.Be6+?
- 1...Kc6
- 2.Rb6#
- 1...Kxe6!
- 1...Kc6
- 1.Qc3?
- threat
- 2.Sb6#
- 1...Bxc5
- 2.Qxc5#
- 1...Bd4
- 2.Rxd4#
- 2.Qxd4#
- 1...Bc4!
- threat
- 1.Qe3?
- threat
- 2.Sc3#
- 2.Sb6#
- 2.Rd4#
- 1...Rxe3
- 2.Rd4#
- 1...e1Q
- 2.Sb6#
- 2.Rd4#
- 1...e1B
- 2.Sb6#
- 2.Rd4#
- 1...Bc4
- 2.Sc3#
- 2.Sb6#
- 1...Bxe3!
- threat
- 1.Qxd3+?
- 1...Bd4
- 2.Rxd4#
- 1...Rxd3+!
- 1...Bd4
- 1.Se3+?
- Keys
- 1.Bd4!
- threat
- 2.Sc3#
- 1...Bc4+
- 2.Sxg3#
- 1...Be4+
- 2.Se3#
- 1...Bb5+
- 2.Sxg3#
- 1...Bxf5+
- 2.Be3#
- 1...Ba6+
- 2.Sxg3#
- 1...Ke4
- 2.Bc6#
- 1...Bxd4
- 2.Rxd4#
- threat
- 1.Bd4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 3
- Sets
- R(f);S_CUTB(b)::R1(E)
- B(b);N_GUARD::R1(E)
- B(b);N_GUARD,N_SPINB(e)::R1(E),XB(b)
- B(b);P_PINR(E),SBLOCK,XP(G)::S(D)
- Tries
- Try
- S(I);CHECK
- Vars
- R(f);XS(I)::R1(E)
- Refutation
- B(b);XS(I)
- Try
- B(H);
- Threat
- DUALS(2)
- Vars
- B(b);P_PINR(E),SBLOCK,XP(G)::S(D)
- S(h);XP(K)::R(J)+S(I),DCHECK
- B(b);N_GUARD,N_SPINB(e)::R1(E),XB(b)
- P(d);::R(J)+S(I),DCHECK
- R(f);::R(J)+S(I),DCHECK
- S(h);::R(J)+S(I),DCHECK
- Refutation
- R(f);
- Try
- B(H);
- Threat
- DUALS(2)
- Vars
- B(b);P_PINR(E),SBLOCK,XP(G)::S(D)
- S(h);XP(K)::R(J)+S(I),DCHECK
- B(b);N_GUARD,N_SPINB(e)::R1(E),XB(b)
- P(d);::R(J)+S(I),DCHECK
- R(f);::R(J)+S(I),DCHECK
- S(h);::R(J)+S(I),DCHECK
- Refutation
- R(f);
- Try
- B(H);
- Threat
- DUALS(2)
- Vars
- B(b);P_PINR(E),SBLOCK,XP(G)::S(D)
- S(h);XP(K)::R(J)+S(I),DCHECK
- S(h);XB(H)::R(J)+S(I),DCHECK
- B(b);N_GUARD,N_SPINB(e)::R1(E),XB(b)
- P(d);::R(J)+S(I),DCHECK
- R(f);::R(J)+S(I),DCHECK
- S(h);::R(J)+S(I),DCHECK
- Refutation
- R(f);
- Try
- B(H);
- Threat
- DUALS(2)
- Vars
- B(b);P_PINR(E),SBLOCK,XP(G)::S(D)
- S(h);XP(K)::R(J)+S(I),DCHECK
- S(h);XB(H)::R(J)+S(I),DCHECK
- B(b);N_GUARD,N_SPINB(e)::R1(E),XB(b)
- P(d);::R(J)+S(I),DCHECK
- R(f);::R(J)+S(I),DCHECK
- S(h);::R(J)+S(I),DCHECK
- Refutation
- R(f);
- Try
- B(H);
- Threat
- DUALS(2)
- Vars
- B(b);P_PINR(E),SBLOCK,XP(G)::S(D)
- S(h);XP(K)::R(J)+S(I),DCHECK
- B(b);N_GUARD,N_SPINB(e)::R1(E),XB(b)
- P(d);::R(J)+S(I),DCHECK
- R(f);::R(J)+S(I),DCHECK
- S(h);::R(J)+S(I),DCHECK
- Refutation
- R(f);
- Try
- B(L);CHECK
- Vars
- K(g);N_GUARD,N_SPINB(e),S_FLIGHT::R1(E)
- Refutation
- K(g);N_SPINB(e),S_FLIGHT,XB(L)
- Try
- Q(B);N_PINB(e)
- Threat
- S(D)
- Vars
- B(b);OGATE,P_PINR(E),XP(G)::QAR1(B),XB(b)
- Refutation
- B(e);P_PINQ(B)
- Try
- Q(B);N_PINB(e)
- Threat
- DUALS(3)
- Vars
- R(f);XQ(B)::R1(E)
- Refutation
- B(b);XQ(B)
- Try
- Q(B);CHECK,P_SPINQ(B),XB(e)
- Vars
- B(b);N_GUARD,P_SPINB(b)::R1(E),XB(b)
- Refutation
- R(f);CHECK,XQ(B)
- Try
- Actual
- B(H);N_PINB(e)
- Threat
- S(D)
- Vars
- B(e);CHECK,N_GUARD::R(J)+S(I),XR(f)
- B(e);CHECK,SBLOCK::R(J)+S(I),DCHECK
- B(e);CHECK,OGATEB,P_SPINB(e),XS(I)::QAR(B)+B(H)
- K(g);N_GUARD,S_FLIGHT::B(L)
- B(b);OGATE,XB(H)::R1(E),XB(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).