MESON Chess Problem Database
Problem Display
PID: 161860 (4R3/1qB2ppQ/5k2/2b1pB1P/1rn2P1K/4p1N1/7N/3b4 w - - 0 1)
Ahues, Herbert Siegfried Oskar
Schach, 1984
#2
9 + 10
| 15148 | Sadier Collection | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Qe4
- 2.Sxe4#
- 1...Qa6
- 2.Se4#
- 1...Qc8
- 2.Se4#
- 1...Qb5
- 2.Se4#
- 1...Qb6
- 2.Se4#
- 1...Qa7
- 2.Se4#
- 1...Qxc7
- 2.Se4#
- 1...Qb8
- 2.Se4#
- 1...Bc2
- 2.Sg4#
- 1...Bb3
- 2.Sg4#
- 1...Ba4
- 2.Sg4#
- 1...Bg4
- 2.Sxg4#
- 1...Bxh5
- 2.Sxh5#
- 1...Sb2
- 2.Bxe5#
- 1...Sd2
- 2.Bxe5#
- 1...Sa3
- 2.Bxe5#
- 1...Sa5
- 2.Bxe5#
- 1...Sb6
- 2.Bxe5#
- 1...e2
- 2.Sg4#
- 1...g5+
- 2.fxg5#
- 1...g6
- 2.Qh8#
- 1...Qe4
- Tries
- 1.Bb1?
- threat
- 2.Qf5#
- 1...g5+
- 2.fxg5#
- 1...Qe4
- 2.Sxe4#
- 1...Qc8
- 2.Se4#
- 1...Bc2
- 2.Sg4#
- 1...Bg4
- 2.Sxg4#
- 1...g6
- 2.Qh8#
- 1...Sd6!
- threat
- 1.Bc2?
- threat
- 2.Qf5#
- 1...g5+
- 2.fxg5#
- 1...Bxc2
- 2.Sg4#
- 1...Qe4
- 2.Sxe4#
- 1...Qc8
- 2.Se4#
- 1...Bg4
- 2.Sxg4#
- 1...g6
- 2.Qh8#
- 1...Sd6!
- threat
- 1.Bd3?
- threat
- 2.Qf5#
- 1...g5+
- 2.fxg5#
- 1...Qe4
- 2.Sxe4#
- 1...Qc8
- 2.Se4#
- 1...Bg4
- 2.Sxg4#
- 1...g6
- 2.Qh8#
- 1...Sd6!
- threat
- 1.Bh3?
- threat
- 2.Qf5#
- 1...g5+
- 2.fxg5#
- 1...Qe4
- 2.Sxe4#
- 1...Qc8
- 2.Se4#
- 1...Bc2
- 2.Sg4#
- 1...Bg4
- 2.Sxg4#
- 1...g6
- 2.Qh8#
- 1...Sd6!
- threat
- 1.Be4?
- threat
- 2.Qf5#
- 1...g5+
- 2.fxg5#
- 1...Qxe4
- 2.Sxe4#
- 1...Sd6
- 2.fxe5#
- 1...Bg4
- 2.Sxg4#
- 1...g6
- 2.Qh8#
- 1...Qc8!
- threat
- 1.Bg4?
- threat
- 2.Qf5#
- 1...g5+
- 2.fxg5#
- 1...Bxg4
- 2.Sxg4#
- 1...Sd6
- 2.fxe5#
- 1...Qe4
- 2.Sxe4#
- 1...Qc8
- 2.Se4#
- 1...g6
- 2.Qh8#
- 1...Bc2!
- threat
- 1.Be6?
- threat
- 2.Qf5#
- 1...g5+
- 2.fxg5#
- 1...fxe6
- 2.Qg6#
- 1...Qe4
- 2.Sxe4#
- 1...Bc2
- 2.Sg4#
- 1...Bg4
- 2.Sxg4#
- 1...g6
- 2.Qxf7#
- 2.Qh8#
- 1...Sd6!
- threat
- 1.Bc8?
- threat
- 2.Qf5#
- 1...g5+
- 2.fxg5#
- 1...Qxc8
- 2.Se4#
- 1...Qe4
- 2.Sxe4#
- 1...Bc2
- 2.Sg4#
- 1...Bg4
- 2.Sxg4#
- 1...g6
- 2.Qh8#
- 1...Sd6!
- threat
- 1.Bd8+?
- 1...Qe7
- 2.Se4#
- 1...Be7!
- 1...Qe7
- 1.Qh6+?
- 1...g6
- 2.Qh8#
- 1...gxh6!
- 1...g6
- 1.h6?
- threat
- 2.Qxg7#
- 1...g5+
- 2.fxg5#
- 1...gxh6
- 2.Qxh6#
- 2.Qh8#
- 1...g6
- 2.Qg7#
- 2.Qh8#
- 1...Bf8!
- threat
- 1.Bb1?
- Keys
- 1.Bd7!
- threat
- 2.Qf5#
- 1...g5+
- 2.fxg5#
- 1...Sd6
- 2.Bd8#
- 1...Qe4
- 2.Sxe4#
- 1...Bc2
- 2.Sg4#
- 1...Bg4
- 2.Sxg4#
- 1...g6
- 2.Qh8#
- threat
- 1.Bd7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 16
- Sets
- Q(h);N_GUARD,P_PINP(C)::S(B),XQ(h)
- Q(h);N_GUARD::S(B)
- Q(h);N_GUARD,XB(G)::S(B)
- B(a);N_GUARD::S(A)
- B(a);N_GUARD::S(A),XB(a)
- B(a);XP(F)::S(B),XB(a)
- S(d);N_GUARD,P_PINP(C)::B(G),XP(f)
- P(b);S_CUTB(a)::S(A)
- P(j);CHECK,OGATE::P(C),XP(j)
- P(j);OGATEB::QAB(H)
- Tries
- Try
- B(E);
- Threat
- QAR1(H)
- Vars
- P(j);CHECK,OGATE::P(C),XP(j)
- Q(h);N_GUARD,P_PINP(C)::S(B),XQ(h)
- Q(h);N_GUARD::S(B)
- B(a);N_GUARD::S(A)
- B(a);N_GUARD::S(A),XB(a)
- P(j);OGATEB::QAB(H)
- Refutation
- S(d);P_PINP(C)
- Try
- B(E);
- Threat
- QAR1(H)
- Vars
- P(j);CHECK,OGATE::P(C),XP(j)
- B(a);N_GUARD,XB(E)::S(A)
- Q(h);N_GUARD,P_PINP(C)::S(B),XQ(h)
- Q(h);N_GUARD::S(B)
- B(a);N_GUARD::S(A),XB(a)
- P(j);OGATEB::QAB(H)
- Refutation
- S(d);P_PINP(C)
- Try
- B(E);
- Threat
- QAR1(H)
- Vars
- P(j);CHECK,OGATE::P(C),XP(j)
- Q(h);N_GUARD,P_PINP(C)::S(B),XQ(h)
- Q(h);N_GUARD::S(B)
- B(a);N_GUARD::S(A),XB(a)
- P(j);OGATEB::QAB(H)
- Refutation
- S(d);P_PINP(C)
- Try
- B(E);
- Threat
- QAR1(H)
- Vars
- P(j);CHECK,OGATE::P(C),XP(j)
- Q(h);N_GUARD,P_PINP(C)::S(B),XQ(h)
- Q(h);N_GUARD::S(B)
- B(a);N_GUARD::S(A)
- B(a);N_GUARD::S(A),XB(a)
- P(j);OGATEB::QAB(H)
- Refutation
- S(d);P_PINP(C)
- Try
- B(E);
- Threat
- QAR1(H)
- Vars
- P(j);CHECK,OGATE::P(C),XP(j)
- Q(h);P_PINP(C),XB(E)::S(B),XQ(h)
- S(d);N_GUARD::P(C),XP(f)
- B(a);N_GUARD::S(A),XB(a)
- P(j);OGATEB::QAB(H)
- Refutation
- Q(h);
- Try
- B(E);
- Threat
- QAR1(H)
- Vars
- P(j);CHECK,OGATE::P(C),XP(j)
- B(a);XB(E)::S(A),XB(a)
- S(d);N_GUARD::P(C),XP(f)
- Q(h);N_GUARD::S(B),XQ(h)
- Q(h);N_GUARD::S(B)
- P(j);OGATEB::QAB(H)
- Refutation
- B(a);
- Try
- B(E);
- Threat
- QAR1(H)
- Vars
- P(j);CHECK,OGATE::P(C),XP(j)
- P(i);N_GUARD,XB(E)::QAR1(H)
- Q(h);N_GUARD,P_PINP(C)::S(B),XQ(h)
- B(a);N_GUARD::S(A)
- B(a);N_GUARD::S(A),XB(a)
- Refutation
- S(d);P_PINP(C)
- Try
- B(E);
- Threat
- QAR1(H)
- Vars
- P(j);CHECK,OGATE::P(C),XP(j)
- Q(h);N_GUARD,XB(E)::S(B)
- Q(h);N_GUARD,P_PINP(C)::S(B),XQ(h)
- B(a);N_GUARD::S(A)
- B(a);N_GUARD::S(A),XB(a)
- P(j);OGATEB::QAB(H)
- Refutation
- S(d);P_PINP(C)
- Try
- B(G);CHECK
- Vars
- Q(h);P_SPINQ(h)::S(B)
- Refutation
- B(e);P_SPINB(e)
- Try
- Q(H);CHECK
- Vars
- P(j);OGATEB,P_SPINP(j)::QAB(H)
- Refutation
- P(j);XQ(H)
- Try
- P(F);
- Threat
- QAB1(H),XP(j)
- Vars
- P(j);CHECK,OGATE::P(C),XP(j)
- Refutation
- B(e);
- Try
- Actual
- B(E);
- Threat
- QAR1(H)
- Vars
- P(j);CHECK,OGATE::P(C),XP(j)
- S(d);P_PINP(C),S_CUTB(e)::B(G)
- Q(h);N_GUARD,P_PINP(C)::S(B),XQ(h)
- B(a);N_GUARD::S(A)
- B(a);N_GUARD::S(A),XB(a)
- P(j);OGATEB::QAB(H)
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).