MESON Chess Problem Database
Problem Display
PID: 261339 (1qn2b2/1Q1p1P2/N1n3B1/2pR1RP1/2p1kB2/K1P5/6P1/4Nr2 w - - 0 1)
Simonet, Andre
Neue Zurcher Zeitung, 1988
#2
12 + 9
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Qxf4
- 2.Rfe5#
- 1...Qe5
- 2.Rdxe5#
- 1...Qd6
- 2.Qb1#
- 1...Qa7
- 2.Rde5#
- 2.Qb1#
- 1...Qc7
- 2.Qb1#
- 1...Qa8
- 2.Rde5#
- 2.Qb1#
- 1...Rf3
- 2.gxf3#
- 1...Rxf4
- 2.Rfe5#
- 1...Bh6
- 2.Sxc5#
- 1...Bg7
- 2.Sxc5#
- 1...Sb4
- 2.Rd4#
- 2.Rde5#
- 2.Rf6#
- 1...Sd4
- 2.Rxd4#
- 2.Rde5#
- 1...Sa5
- 2.Rd4#
- 2.Rde5#
- 2.Rf6#
- 1...Se5
- 2.Rd4#
- 2.Rdxe5#
- 1...S6a7
- 2.Rd4#
- 2.Rde5#
- 2.Rf6#
- 1...S6e7
- 2.Sxc5#
- 2.Rd4#
- 2.Rde5#
- 1...Sd8
- 2.Rd4#
- 2.Rde5#
- 2.Rf6#
- 1...Sd6
- 2.Sxc5#
- 2.Rde5#
- 1...S8e7
- 2.Sxc5#
- 1...Qxf4
- Tries
- 1.Sxb8?
- threat
- 2.Rde5#
- 2.Qb1#
- 1...Rxf4
- 2.Rde5#
- 2.Rfe5#
- 1...Rf2
- 2.Rde5#
- 1...Rf3
- 2.Rde5#
- 2.gxf3#
- 1...Bd6
- 2.Qb1#
- 1...Bg7
- 2.Qb1#
- 1...Sb4
- 2.Rd4#
- 2.Rde5#
- 2.Rf6#
- 1...Sd4
- 2.Rxd4#
- 2.Rde5#
- 1...Se5
- 2.Rd4#
- 2.Rdxe5#
- 1...Sb6
- 2.Rde5#
- 1...d6
- 2.Qb1#
- 1...Rxe1!
- threat
- 1.Bc1?
- threat
- 2.Rfe5#
- 1...Qe5
- 2.Rdxe5#
- 2.Rfxe5#
- 1...Se5
- 2.Rd4#
- 2.Rdxe5#
- 2.Rf4#
- 2.Rfxe5#
- 1...Rxf5!
- threat
- 1.Bd2?
- threat
- 2.Rfe5#
- 1...Qe5
- 2.Rdxe5#
- 2.Rfxe5#
- 1...Se5
- 2.Rd4#
- 2.Rdxe5#
- 2.Rf4#
- 2.Rfxe5#
- 1...Rxf5!
- threat
- 1.Rd2?
- threat
- 2.Re2#
- 2.Rf6#
- 1...Rxe1
- 2.Rf6#
- 1...Rxf4
- 2.Re2#
- 1...Qe5
- 2.Qb1#
- 1...Rf2
- 2.Rf6#
- 1...Rf3
- 2.Rf6#
- 2.gxf3#
- 1...Sd6
- 2.Sxc5#
- 2.Re2#
- 1...Se7
- 2.Sxc5#
- 2.Re2#
- 1...Qxf4!
- threat
- 1.g3?
- threat
- 2.Rfe5#
- 1...Qe5
- 2.Rdxe5#
- 2.Rfxe5#
- 1...Se5
- 2.Rd4#
- 2.Rdxe5#
- 2.Rfxe5#
- 1...Rxe1!
- threat
- 1.Sxb8?
- Keys
- 1.Rxc5!
- threat
- 2.Rf6#
- 1...Bxc5+
- 2.Sxc5#
- 1...Qxf4
- 2.Re5#
- 1...Rxf4
- 2.Re5#
- 1...Qe5
- 2.Qb1#
- 1...Sd6
- 2.Rce5#
- 1...Se7
- 2.Rxc4#
- threat
- 1.Rxc5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 2
- REMOVED MATES = 5
- Sets
- Q(g);SBLOCK,XB(E)::B(J)+R(G),DCHECK
- Q(g);N_GUARD::R1(F),XQ(g)
- Q(g);N_GUARD::QAB(K)
- R(a);OGATE,P_PINP(D)::P(B),XR(a)
- R(a);SBLOCK,XB(E)::B(J)+R(G),DCHECK
- B(i);N_GUARD::S(I),XP(d)
- S(h);S_CUTB(i)::S(I),XP(d)
- Tries
- Try
- S(I);XQ(g)
- Threat
- DUALS(2)
- Vars
- R(a);::R1(F)
- B(i);::QAB(K)
- S(h);::R1(F)
- P(f);::QAB(K)
- Refutation
- R(a);XS(A)
- Try
- B(E);
- Threat
- B(J)+R(G),DCHECK
- Refutation
- R(a);P_SPINR(a),XR(G)
- Try
- B(E);
- Threat
- B(J)+R(G),DCHECK
- Refutation
- R(a);P_SPINR(a),XR(G)
- Try
- R(F);P_PINS(e)
- Threat
- DUALS(2)
- Vars
- R(a);XS(A)::B(J)+R(G)
- R(a);XB(E)::R(F)
- Q(g);N_GUARD::QAB(K)
- R(a);::B(J)+R(G)
- Refutation
- Q(g);XB(E)
- Try
- P(B);
- Threat
- B(J)+R(G),DCHECK
- Refutation
- R(a);XS(A)
- Try
- Actual
- R(F);P_PINS(e),P_SPINR(F),XP(d)
- Threat
- B(J)+R(G)
- Vars
- B(i);CHECK,XR(F)::S(I),XB(i)
- Q(g);SBLOCK,XB(E)::B(J)+R(G),DCHECK
- R(a);SBLOCK,XB(E)::B(J)+R(G),DCHECK
- Q(g);N_GUARD::QAB(K)
- S(h);N_PINR(F)::R1(F)
- S(h);N_PINR(F)::R(F),XP(b)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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