MESON Chess Problem Database
Problem Display
PID: 235072 (4R2K/p2B4/r1P1Np2/1Q2N1P1/3pk1p1/3p2Bb/n1PppP2/b1q5 w - - 0 1)
Shanshin, Valery Yurevich
Hlas l'udu, 1986
#2
11 + 13
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Kf5
- 2.Qxd3#
- 1...fxg5
- 2.Sxg5#
- 1...f5
- 2.cxd3#
- 1...Kf5
- Tries
- 1.Sxd4?
- threat
- 2.Sef3#
- 1...Kxd4
- 2.Qc4#
- 1...Rxc6
- 2.Sexc6#
- 1...Bxd4
- 2.cxd3#
- 1...fxe5
- 2.Qxe5#
- 1...Qa3!
- threat
- 1.Sf4?
- threat
- 2.Qxd3#
- 2.Qd5#
- 2.cxd3#
- 1...Qxc2
- 2.Qd5#
- 1...dxc2
- 2.Qxe2#
- 2.Qd3#
- 2.Qd5#
- 1...fxe5
- 2.Qxd3#
- 2.Qd5#
- 1...d1Q
- 2.Qd5#
- 1...d1R
- 2.Qd5#
- 1...e1S
- 2.Qd5#
- 1...Qa3
- 2.Qd5#
- 1...Qb1
- 2.Qxd3#
- 2.Qd5#
- 1...Ra3
- 2.Qd5#
- 1...Ra5
- 2.Qxd3#
- 2.cxd3#
- 1...Sc3
- 2.Qxd3#
- 2.cxd3#
- 1...Sb4!
- threat
- 1.Sc7?
- threat
- 2.Qxd3#
- 2.Qd5#
- 2.cxd3#
- 1...Qxc2
- 2.Qd5#
- 1...dxc2
- 2.Qxe2#
- 2.Qd3#
- 2.Qd5#
- 1...fxe5
- 2.Qxd3#
- 2.Qd5#
- 1...d1Q
- 2.Qd5#
- 1...d1R
- 2.Qd5#
- 1...e1S
- 2.Qd5#
- 1...Qa3
- 2.Qd5#
- 1...Qb1
- 2.Qxd3#
- 2.Qd5#
- 1...Ra3
- 2.Qd5#
- 1...Ra5
- 2.Qxd3#
- 2.cxd3#
- 1...Sc3
- 2.Qxd3#
- 2.cxd3#
- 1...Sb4!
- threat
- 1.Sg7?
- threat
- 2.Bf5#
- 2.cxd3#
- 1...Qxc2
- 2.Bf5#
- 1...dxc2
- 2.Bf5#
- 1...d1Q
- 2.Bf5#
- 1...d1R
- 2.Bf5#
- 1...e1S
- 2.Bf5#
- 1...Sb4
- 2.Bf5#
- 1...Qa3
- 2.Bf5#
- 1...Qb1
- 2.Bf5#
- 1...Ra3
- 2.Bf5#
- 1...f5
- 2.Bxf5#
- 2.cxd3#
- 1...fxe5!
- threat
- 1.f3+?
- 1...Ke3
- 2.Qxd3#
- 1...Kf5
- 2.Qxd3#
- 1...gxf3!
- 1...Ke3
- 1.Sxd4?
- Keys
- 1.Sf3!
- threat
- 2.Sexd4#
- 1...Kxf3
- 2.Qd5#
- 1...Rxc6
- 2.Bxc6#
- 1...gxf3
- 2.cxd3#
- 1...Qa3
- 2.Sxd2#
- threat
- 1.Sf3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 3
- Sets
- K(i);S_FLIGHT::QAB(D),XP(f)
- P(l);XP(F)::S(H),XP(l)
- P(l);SBLOCK::P(A),XP(f)
- Tries
- Try
- S(H);XP(h)
- Threat
- R(J)+S(E)
- Vars
- K(i);OGATEB,P-FLIGHT,XS(H)::QAR1(D)
- R(k);XP(G)::R(J)+S(E),XR(k)
- B(a);SBLOCK,XS(H)::P(A),XP(f)
- P(l);OGATE,P_SPINP(l),XS(E)::QAR1(D),XP(l)
- Refutation
- Q(b);
- Try
- S(H);
- Threat
- DUALS(3)
- Vars
- Q(b);XP(A)::QAB1(D)
- P(d);::QAB1(D)
- P(e);::QAB1(D)
- Q(b);::QAB1(D)
- R(k);::QAB1(D)
- Refutation
- S(c);
- Try
- S(H);
- Threat
- DUALS(3)
- Vars
- Q(b);XP(A)::QAB1(D)
- P(d);::QAB1(D)
- P(e);::QAB1(D)
- Q(b);::QAB1(D)
- R(k);::QAB1(D)
- Refutation
- S(c);
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- Q(b);XP(A)::B(I)
- P(f);XP(A)::B(I)
- P(d);::B(I)
- P(e);::B(I)
- S(c);::B(I)
- Q(b);::B(I)
- R(k);::B(I)
- Refutation
- P(l);P_SPINP(l),XS(E)
- Try
- P(B);CHECK
- Vars
- K(i);P-FLIGHT::QAR1(D),XP(f)
- K(i);S_FLIGHT::QAB(D),XP(f)
- Refutation
- P(j);XP(B)
- Try
- Actual
- S(E);
- Threat
- R(J)+S(H),XP(h)
- Vars
- K(i);S_FLIGHT,XS(E)::QAB(D)
- R(k);OGATE,XP(G)::B(I),XR(k)
- P(j);SBLOCK,XS(E)::P(A),XP(f)
- Q(b);N_GUARD::S(E),XP(d)
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).