MESON Chess Problem Database
Problem Display
PID: 30754 (8/1K3p1Q/5Prp/Bk2P2P/1P1P2r1/1P4NB/2N4n/1n6 w - - 0 1)
Bertrand, E?
2nd Prize=, La Nature, 1880
#2
12 + 7
| 2638 | White to Play | 1913 |
SOLUTION
- SOUND
- Sets
- 1...Rxg3
- 2.Bd7#
- 1...Rxd4
- 2.Sxd4#
- 1...Re4
- 2.Bd7#
- 1...Rf4
- 2.Bd7#
- 1...Rh4
- 2.Bd7#
- 1...R4g5
- 2.Bd7#
- 1...R6g5
- 2.Qd3#
- 1...Rxf6
- 2.Qd3#
- 1...Rg7
- 2.Qd3#
- 1...Rg8
- 2.Qd3#
- 1...Sd2
- 2.Sa3#
- 1...Sa3
- 2.Sxa3#
- 1...Sc3
- 2.Sa3#
- 1...Sf1
- 2.Bxf1#
- 1...Sf3
- 2.Bf1#
- 1...Rxg3
- Tries
- 1.Sf1?
- 1...Rxd4
- 2.Sxd4#
- 1...Rxf6
- 2.Qd3#
- 1...Sxf1
- 2.Bxf1#
- 1...Sd2
- 2.Sa3#
- 1...Rg1
- 2.Bd7#
- 1...Rg2
- 2.Bd7#
- 1...Rg3
- 2.Bd7#
- 1...Re4
- 2.Bd7#
- 1...Rf4
- 2.Bd7#
- 1...Rh4
- 2.Bd7#
- 1...R4g5
- 2.Bd7#
- 1...R6g5
- 2.Qd3#
- 1...Rg7
- 2.Qd3#
- 1...Rg8
- 2.Qd3#
- 1...Sa3
- 2.Sxa3#
- 1...Sc3
- 2.Sa3#
- 1...Sf3!
- 1...Rxd4
- 1.Se4?
- threat
- 2.Sd6#
- 1...Rxe4
- 2.Bd7#
- 1...Rxf6!
- threat
- 1.Sf5?
- threat
- 2.Sd6#
- 1...Rxd4
- 2.Scxd4#
- 2.Sfxd4#
- 1...Rxf6!
- threat
- 1.Bg2?
- threat
- 2.Bc6#
- 1...Rxf6
- 2.Qd3#
- 1...Sf3
- 2.Bf1#
- 1...Re4!
- threat
- 1.Bxg4?
- threat
- 2.Be2#
- 2.Bd7#
- 1...Rxg4
- 2.Qd3#
- 1...Rxf6
- 2.Be2#
- 2.Qd3#
- 1...Sd2
- 2.Sa3#
- 2.Bd7#
- 1...Sa3
- 2.Sxa3#
- 2.Bd7#
- 1...Sc3
- 2.Sa3#
- 2.Bd7#
- 1...Sf3
- 2.Bd7#
- 1...Sxg4!
- threat
- 1.Qxg6?
- threat
- 2.Qd3#
- 1...Rxg3
- 2.Bd7#
- 1...Rxd4
- 2.Sxd4#
- 1...Rxg6
- 2.Bd7#
- 1...Sd2
- 2.Sa3#
- 1...Re4
- 2.Bd7#
- 1...Sa3
- 2.Sxa3#
- 1...fxg6!
- threat
- 1.Qxf7?
- threat
- 2.Qc4#
- 2.Qd5#
- 2.Qe8#
- 2.Qd7#
- 1...Rxd4
- 2.Sxd4#
- 1...Rxf6
- 2.Qc4#
- 2.Qd5#
- 1...Sd2
- 2.Sa3#
- 2.Qd5#
- 2.Qe8#
- 2.Qd7#
- 1...Rg8
- 2.Qc4#
- 2.Qd5#
- 2.Qd7#
- 1...Sa3
- 2.Sxa3#
- 2.Qd5#
- 2.Qe8#
- 2.Qd7#
- 1...Sc3
- 2.Sa3#
- 2.Qc4#
- 2.Qe8#
- 2.Qd7#
- 1...Rg7!
- threat
- 1.hxg6?
- 1...Rxg3
- 2.Bd7#
- 1...Rxd4
- 2.Sxd4#
- 1...Rxg6
- 2.Bd7#
- 1...fxg6
- 2.Qd7#
- 1...Sd2
- 2.Sa3#
- 1...Re4
- 2.Bd7#
- 1...Rf4
- 2.Bd7#
- 1...Rh4
- 2.Bd7#
- 1...Rg5
- 2.Bd7#
- 1...Sa3
- 2.Sxa3#
- 1...Sc3
- 2.Sa3#
- 1...Sf1
- 2.Bxf1#
- 1...Sf3
- 2.Bf1#
- 1...h5!
- 1...Rxg3
- 1.Sf1?
- Keys
- 1.Sh1!
- 1...Rxd4
- 2.Sxd4#
- 1...Rxf6
- 2.Qd3#
- 1...Sd2
- 2.Sa3#
- 1...Rg1
- 2.Bd7#
- 1...Rg2
- 2.Bd7#
- 1...Rg3
- 2.Bd7#
- 1...Re4
- 2.Bd7#
- 1...Rf4
- 2.Bd7#
- 1...Rh4
- 2.Bd7#
- 1...R4g5
- 2.Bd7#
- 1...R6g5
- 2.Qd3#
- 1...Rg7
- 2.Qd3#
- 1...Rg8
- 2.Qd3#
- 1...Sa3
- 2.Sxa3#
- 1...Sc3
- 2.Sa3#
- 1...Sf1
- 2.Bxf1#
- 1...Sf3
- 2.Bf1#
- 1...Rxd4
- 1.Sh1!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- R(c);OGATE,XS(C)::B(D)
- R(c);XP(F)::S(A),XR(c)
- R(c);OGATE::B(D)
- R(e);OGATE::QAB(L)
- R(e);OGATE,XP(J)::QAB(L)
- S(a);N_GUARD::S(A)
- S(a);N_GUARD::S(A),XS(a)
- S(b);N_GUARD::B(D),XS(b)
- S(b);N_GUARD::B(D)
- Tries
- Try
- S(C);
- Vars
- R(c);XP(F)::S(A),XR(c)
- R(e);OGATE,XP(J)::QAB(L)
- S(b);OGATE,XS(C)::B(D),XS(b)
- S(a);N_GUARD::S(A)
- R(c);OGATE::B(D)
- R(e);OGATE::QAB(L)
- S(a);N_GUARD::S(A),XS(a)
- Refutation
- S(b);
- Try
- S(C);
- Threat
- S(C)
- Vars
- R(c);OGATE,XS(C)::B(D)
- Refutation
- R(e);XP(J)
- Try
- S(C);
- Threat
- S(C)
- Refutation
- R(e);XP(J)
- Try
- B(D);
- Threat
- B(D)
- Vars
- R(e);OGATE,XP(J)::QAB(L)
- S(b);N_GUARD::B(D)
- Refutation
- R(c);
- Try
- B(D);XR(c)
- Threat
- DUALS(2)
- Vars
- R(e);OGATE,XB(D)::QAB(L)
- S(b);::B(D)
- Refutation
- S(b);XB(D)
- Try
- Q(L);XR(e)
- Threat
- QAB(L)
- Vars
- R(c);OGATE,XS(C)::B(D)
- R(c);XP(F)::S(A),XR(c)
- R(c);OGATE,XQ(L)::B(D)
- S(a);N_GUARD::S(A)
- R(c);OGATE::B(D)
- S(a);N_GUARD::S(A),XS(a)
- Refutation
- P(g);XQ(L)
- Try
- Q(L);XP(g)
- Threat
- DUALS(4)
- Vars
- R(c);XP(F)::S(A),XR(c)
- Refutation
- R(e);P_PINQ(L)
- Try
- P(I);XR(e)
- Vars
- R(c);OGATE,XS(C)::B(D)
- R(c);XP(F)::S(A),XR(c)
- R(c);OGATE,XP(I)::B(D)
- P(g);OGATE,XP(I)::QAB(L)
- S(a);N_GUARD::S(A)
- R(c);OGATE::B(D)
- S(a);N_GUARD::S(A),XS(a)
- S(b);N_GUARD::B(D),XS(b)
- S(b);N_GUARD::B(D)
- Refutation
- P(f);
- Try
- Actual
- S(C);
- Vars
- R(c);XP(F)::S(A),XR(c)
- R(e);OGATE,XP(J)::QAB(L)
- S(a);N_GUARD::S(A)
- R(c);OGATE::B(D)
- R(e);OGATE::QAB(L)
- S(a);N_GUARD::S(A),XS(a)
- S(b);N_GUARD::B(D),XS(b)
- S(b);N_GUARD::B(D)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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