MESON Chess Problem Database
Problem Display
PID: 48244 (3rNQ1b/8/p3Bpp1/KR1Pk1P1/1p4R1/1pqP2P1/n4P2/B2r1nNb w - - 0 1)
Loustau, Jean-Marc
Rotenberg, Jacques
4th Prize, Die Schwalbe, 1986
#2
13 + 13
| 23 | Die Schwalbe | 2003 |
SOLUTION
- SOUND
- Sets
- 1...Qd4
- 2.Bxd4#
- 2.f4#
- 1...Rxd5
- 2.Qd6#
- 1...Rd6
- 2.Qxd6#
- 1...Ra8
- 2.Qd6#
- 1...Rb8
- 2.Qd6#
- 1...Rc8
- 2.Qd6#
- 1...Bf3
- 2.Sxf3#
- 1...Be4
- 2.Rxe4#
- 1...Bxd5
- 2.Re4#
- 1...fxg5
- 2.Qxh8#
- 1...f5
- 2.Qxh8#
- 1...Qd4
- Tries
- 1.Sd6?
- threat
- 2.Sc4#
- 2.Sf7#
- 1...Rxa1
- 2.Sf7#
- 1...Rxf8
- 2.Sc4#
- 1...Bxd5
- 2.Re4#
- 1...axb5
- 2.Sf7#
- 1...fxg5
- 2.Sc4#
- 1...Be4
- 2.Rxe4#
- 1...Rd7
- 2.Sc4#
- 1...Rc8
- 2.Sf7#
- 1...Sd2
- 2.Sf7#
- 1...Se3
- 2.Sf7#
- 1...b2
- 2.Sf7#
- 1...Rxd6!
- threat
- 1.Rgxb4?
- threat
- 2.f4#
- 1...Rxd5
- 2.Qd6#
- 1...Sxb4
- 2.Bxc3#
- 1...fxg5
- 2.Qxh8#
- 1...Bf3
- 2.Sxf3#
- 1...Bxd5!
- threat
- 1.Qxb4?
- threat
- 2.f4#
- 1...Bxd5
- 2.Re4#
- 1...Sxb4
- 2.Bxc3#
- 1...fxg5
- 2.Rxg5#
- 1...Bf3
- 2.Sxf3#
- 1...Rxd5!
- threat
- 1.Qc5?
- threat
- 2.f4#
- 1...Rxd5
- 2.Qd6#
- 1...Bxd5
- 2.Re4#
- 1...fxg5
- 2.Rxg5#
- 1...Bf3
- 2.Sxf3#
- 1...Rxd3!
- threat
- 1.Qe7?
- threat
- 2.Bd7#
- 2.Bc8#
- 1...Rxe8
- 2.Qc7#
- 1...Be4
- 2.Rxe4#
- 1...Rd6
- 2.Qxd6#
- 1...Rd7
- 2.Bxd7#
- 1...Rc8
- 2.Bd7#
- 2.Bxc8#
- 2.Qd6#
- 1...axb5!
- threat
- 1.d6+?
- 1...Kxe6
- 2.Qe7#
- 1...Bd5
- 2.Re4#
- 1...axb5!
- 1...Kxe6
- 1.Sd6?
- Keys
- 1.Rc4!
- threat
- 2.f4#
- 1...Rxd5
- 2.Qd6#
- 1...Bxd5
- 2.Re4#
- 1...fxg5
- 2.Qxh8#
- 1...Bf3
- 2.Sxf3#
- threat
- 1.Rc4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 6
- Sets
- R(l);N_GUARD,P_PINR(H),P_SPINR(l),XP(I)::QAB1(M)
- R(l);N_GUARD::QAB1(M),XR(l)
- R(l);N_GUARD::QAB1(M)
- B(c);N_GUARD::S(B),XB(c)
- B(c);N_GUARD::R1(F),XB(c)
- B(c);N_GUARD,P_SPINB(c),XP(I)::R1(F)
- P(j);OGATEB,XP(J)::QAB(M),XB(m)
- P(j);OGATEB::QAB(M),XB(m)
- Tries
- Try
- S(L);
- Threat
- DUALS(2)
- Vars
- R(a);N_SPINQ(f),XB(A)::S(L)
- R(l);XQ(M)::S(L)
- B(c);N_GUARD,P_SPINB(c),XP(I)::R1(F)
- P(i);XR(H)::S(L)
- P(j);XP(J)::S(L)
- B(c);N_GUARD::R1(F),XB(c)
- R(l);::S(L)
- S(b);::S(L)
- P(e);N_SPINQ(f)::S(L)
- Refutation
- R(l);XS(L)
- Try
- R(F);P_SPINR(F),XP(g)
- Threat
- P(C)
- Vars
- R(l);N_GUARD,P_SPINR(l),XP(I)::QAB1(M)
- S(d);N_GUARD,XR(F)::B(A),XQ(f)
- P(j);OGATEB,XP(J)::QAB(M),XB(m)
- B(c);N_GUARD::S(B),XB(c)
- Refutation
- B(c);P_SPINB(c),XP(I)
- Try
- Q(M);P_SPINQ(M),XP(g)
- Threat
- P(C)
- Vars
- B(c);N_GUARD,P_SPINB(c),XP(I)::R1(F)
- S(d);N_GUARD,XQ(M)::B(A),XQ(f)
- P(j);OGATE,XP(J)::R(F),XP(j)
- B(c);N_GUARD::S(B),XB(c)
- Refutation
- R(l);P_PINR(H),P_SPINR(l),XP(I)
- Try
- Q(M);
- Threat
- P(C)
- Vars
- R(l);N_GUARD,P_SPINR(l),XP(I)::QAB1(M)
- B(c);N_GUARD,P_SPINB(c),XP(I)::R1(F)
- P(j);OGATE,XP(J)::R(F),XP(j)
- B(c);N_GUARD::S(B),XB(c)
- Refutation
- R(a);XP(D)
- Try
- Q(M);
- Threat
- DUALS(2)
- Vars
- R(l);N_GUARD,XS(L)::QAB(M)
- B(c);N_GUARD::R1(F),XB(c)
- R(l);N_GUARD::QAB1(M),XR(l)
- R(l);::QAR(M)+B(K),XR(l)
- Refutation
- P(i);XR(H)
- Try
- P(I);CHECK
- Vars
- K(h);N_SPINQ(f),P-FLIGHT,XB(K)::QAR1(M)
- B(c);P_SPINB(c)::R1(F)
- Refutation
- P(i);XR(H)
- Try
- Actual
- R(F);
- Threat
- P(C)
- Vars
- R(l);N_GUARD,P_PINR(H),P_SPINR(l),XP(I)::QAB1(M)
- B(c);N_GUARD,P_SPINB(c),XP(I)::R1(F)
- P(j);OGATEB,XP(J)::QAB(M),XB(m)
- B(c);N_GUARD::S(B),XB(c)
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).