MESON Chess Problem Database
Problem Display
PID: 196891 (3Q4/1K2NbP1/5p2/2p1PBb1/2N1Pk2/2BPp1p1/1p3pPP/1R6 w - - 0 1)
Ludwig, W
Deutsches Wochenschach, 1919
#2
13 + 9
| 6490 | yacpdb | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Bxc4
- 2.Sg6#
- 1...Bd5+
- 2.Sxd5#
- 1...Bh5
- 2.Sd5#
- 1...Be6
- 2.Sg6#
- 1...Bg6
- 2.Sd5#
- 2.Sxg6#
- 1...Be8
- 2.Sd5#
- 1...Bg8
- 2.Sg6#
- 1...f1Q
- 2.Rxf1#
- 1...f1S
- 2.Rxf1#
- 1...f1B
- 2.Rxf1#
- 1...f1R
- 2.Rxf1#
- 1...e2
- 2.Bd2#
- 1...fxe5
- 2.Bxe5#
- 1...Bxc4
- Tries
- 1.Qd4?
- threat
- 2.Qxe3#
- 1...Bd5+
- 2.Sxd5#
- 1...Bxc4
- 2.Sg6#
- 1...f1S
- 2.Rxf1#
- 1...e2
- 2.Bd2#
- 2.Qe3#
- 1...cxd4!
- threat
- 1.g8Q?
- 1...Bd5+
- 2.Sxd5#
- 1...Bxc4
- 2.Sg6#
- 1...Bxg8
- 2.Sg6#
- 1...fxe5
- 2.Bxe5#
- 1...f1Q
- 2.Rxf1#
- 1...f1S
- 2.Rxf1#
- 1...f1B
- 2.Rxf1#
- 1...f1R
- 2.Rxf1#
- 1...Bh4
- 2.Qg4#
- 1...Bh6
- 2.Qxg3#
- 2.Qg4#
- 2.hxg3#
- 1...Bh5
- 2.Sd5#
- 1...Be6
- 2.Sg6#
- 1...Bg6
- 2.Sd5#
- 2.Sxg6#
- 1...Be8
- 2.Sd5#
- 1...e2
- 2.Bd2#
- 1...gxh2!
- 1...Bd5+
- 1.g8R?
- 1...Bd5+
- 2.Sxd5#
- 1...Bxc4
- 2.Sg6#
- 1...Bxg8
- 2.Sg6#
- 1...fxe5
- 2.Bxe5#
- 1...f1Q
- 2.Rxf1#
- 1...f1S
- 2.Rxf1#
- 1...f1B
- 2.Rxf1#
- 1...f1R
- 2.Rxf1#
- 1...Bh4
- 2.Rg4#
- 1...Bh6
- 2.Rg4#
- 2.hxg3#
- 1...Bh5
- 2.Sd5#
- 1...Be6
- 2.Sg6#
- 1...Bg6
- 2.Sd5#
- 2.Sxg6#
- 1...Be8
- 2.Sd5#
- 1...e2
- 2.Bd2#
- 1...gxh2!
- 1...Bd5+
- 1.Qd4?
- Keys
- 1.Qh8!
- 1...Bd5+
- 2.Sxd5#
- 1...Bxc4
- 2.Sg6#
- 1...gxh2
- 2.Qxh2#
- 1...fxe5
- 2.Bxe5#
- 1...Bh4
- 2.Qxh4#
- 1...Bh6
- 2.Qxh6#
- 1...f1Q
- 2.Rxf1#
- 1...f1S
- 2.Rxf1#
- 1...f1B
- 2.Rxf1#
- 1...f1R
- 2.Rxf1#
- 1...Bh5
- 2.Sd5#
- 1...Be6
- 2.Sg6#
- 1...Bg6
- 2.Sd5#
- 2.Sxg6#
- 1...Be8
- 2.Sd5#
- 1...Bg8
- 2.Sg6#
- 1...e2
- 2.Bd2#
- 1...Bd5+
- 1.Qh8!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- B(i);N_GUARD,XS(F)::S(K)
- B(i);CHECK,N_GUARD::S(K),XB(i)
- B(i);N_GUARD::S(K)
- P(b);OGATEB::R(A),XQ(b)
- P(b);OGATEB::R(A),XS(b)
- P(b);OGATEB::R(A),XB(b)
- P(b);OGATEB::R(A),XR(b)
- P(c);OGATEB::B(D)
- P(h);OGATE,XP(H)::B(D),XP(h)
- Tries
- Try
- Q(M);
- Threat
- QAB1(M),XP(c)
- Vars
- B(i);CHECK,N_GUARD::S(K),XB(i)
- B(i);N_GUARD,XS(F)::S(K)
- P(b);OGATEB::R(A),XS(b)
- Refutation
- P(f);XQ(M)
- Try
- P(L);
- Vars
- B(i);CHECK,N_GUARD::S(K),XB(i)
- B(i);N_GUARD,XS(F)::S(K)
- B(i);N_GUARD,XQ(L)::S(K)
- P(h);OGATE,XP(H)::B(D),XP(h)
- P(b);OGATEB::R(A),XQ(b)
- P(b);OGATEB::R(A),XS(b)
- P(b);OGATEB::R(A),XB(b)
- P(b);OGATEB::R(A),XR(b)
- B(g);OGATE::QAR1(L)
- B(i);N_GUARD::S(K)
- P(c);OGATEB::B(D)
- Refutation
- P(d);XP(C)
- Try
- P(L);
- Vars
- B(i);CHECK,N_GUARD::S(K),XB(i)
- B(i);N_GUARD,XS(F)::S(K)
- B(i);N_GUARD,XR(L)::S(K)
- P(h);OGATE,XP(H)::B(D),XP(h)
- P(b);OGATEB::R(A),XQ(b)
- P(b);OGATEB::R(A),XS(b)
- P(b);OGATEB::R(A),XB(b)
- P(b);OGATEB::R(A),XR(b)
- B(g);OGATE::R1(L)
- B(i);N_GUARD::S(K)
- P(c);OGATEB::B(D)
- Refutation
- P(d);XP(C)
- Try
- Actual
- Q(M);
- Vars
- B(i);CHECK,N_GUARD::S(K),XB(i)
- B(i);N_GUARD,XS(F)::S(K)
- P(d);OGATE,XP(C)::QAB(M),XP(d)
- P(h);OGATE,XP(H)::B(D),XP(h)
- B(g);N_GUARD::QAR2(M),XB(g)
- B(g);OGATEB::QAB(M),XB(g)
- P(b);OGATEB::R(A),XQ(b)
- P(b);OGATEB::R(A),XS(b)
- P(b);OGATEB::R(A),XB(b)
- P(b);OGATEB::R(A),XR(b)
- B(i);N_GUARD::S(K)
- P(c);OGATEB::B(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).