MESON Chess Problem Database
Problem Display
PID: 81924 (6Q1/7N/4prP1/R3bk1K/1r2n1R1/6PP/p1B1b3/q7 w - - 0 1)
Ahues, Herbert Siegfried Oskar
3rd Prize, Problem Observer, 1998
#2
9 + 9
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rb1
- 2.Bxe4#
- 1...Rb2
- 2.Bxe4#
- 1...Rb3
- 2.Bxe4#
- 1...Rb5
- 2.Bxe4#
- 1...Rb6
- 2.Bxe4#
- 1...Rb7
- 2.Bxe4#
- 1...Rb8
- 2.Bxe4#
- 1...Rxg6
- 2.Qxg6#
- 1...Rf7
- 2.Qxf7#
- 1...Rf8
- 2.Qxf8#
- 1...Bf1
- 2.Rf4#
- 2.Rg5#
- 1...Bd3
- 2.Rf4#
- 1...Bc4
- 2.Bxe4#
- 2.Rf4#
- 2.Rg5#
- 1...Bxg4+
- 2.hxg4#
- 1...Bb5
- 2.Rg5#
- 1...Ba6
- 2.Rf4#
- 2.Rg5#
- 1...Rb1
- Tries
- 1.Kh4?
- threat
- 2.Rf4#
- 2.Rg5#
- 1...Rxg6
- 2.Rf4#
- 2.Qxg6#
- 1...Bxg4
- 2.hxg4#
- 1...Qf1
- 2.Rg5#
- 1...Rb5
- 2.Bxe4#
- 2.Rg5#
- 1...Bd3
- 2.Rf4#
- 1...Bb5
- 2.Rg5#
- 1...Qc1!
- threat
- 1.Qf7?
- threat
- 2.Qxf6#
- 1...Bxg4+
- 2.hxg4#
- 1...Rb5
- 2.Bxe4#
- 1...Bd3
- 2.Rf4#
- 1...Bb5
- 2.Rg5#
- 1...Rxf7!
- threat
- 1.Qd8?
- threat
- 2.Qxf6#
- 1...Bxg4+
- 2.hxg4#
- 1...Rb5
- 2.Bxe4#
- 1...Rf7
- 2.Qg5#
- 1...Rf8
- 2.Qg5#
- 2.Qxf8#
- 1...Bd3
- 2.Rf4#
- 1...Bb5
- 2.Rg5#
- 1...Rxg6!
- threat
- 1.Qf8?
- threat
- 2.Qxf6#
- 1...Bxg4+
- 2.hxg4#
- 1...Rb5
- 2.Bxe4#
- 1...Rf7
- 2.Qxf7#
- 1...Bd3
- 2.Rf4#
- 1...Bb5
- 2.Rg5#
- 1...Rxf8!
- threat
- 1.Kh4?
- Keys
- 1.Qg7!
- threat
- 2.Qxf6#
- 1...Bxg4+
- 2.hxg4#
- 1...Rxg6
- 2.Qxg6#
- 1...Rb5
- 2.Bxe4#
- 1...Rf7
- 2.Qxf7#
- 1...Rf8
- 2.Qxf8#
- 1...Bd3
- 2.Rf4#
- 1...Bb5
- 2.Rg5#
- threat
- 1.Qg7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 6
- Sets
- R(d);N_GUARD::B(A),XS(e)
- R(d);N_GUARD,N_SPINB(f)::B(A),XS(e)
- R(i);OGATE,XP(G)::QAB1(I),XR(i)
- R(i);OGATEB::QAR2(I),XR(i)
- R(i);OGATEB::QAR(I),XR(i)
- B(c);N_PINR(D),N_SPINS(e)::R1(D)
- B(c);CHECK,OGATE,XR(D)::P(C),XB(c)
- B(c);N_PINR(D),N_SPINB(f)::R1(D)
- Tries
- Try
- K(F);N_SPINR(D),P-FLIGHT
- Threat
- DUALS(2)
- Vars
- B(c);OGATE,XR(D)::P(C),XB(c)
- Q(a);::R1(D)
- B(c);N_SPINS(e)::R1(D)
- B(c);N_SPINB(f)::R1(D)
- Refutation
- Q(a);
- Try
- Q(I);P_PINR(i)
- Threat
- QAR1(I),XR(i)
- Vars
- B(c);CHECK,OGATE,XR(D)::P(C),XB(c)
- R(d);N_GUARD,N_SPINB(f)::B(A),XS(e)
- B(c);N_PINR(D),N_SPINS(e)::R1(D)
- B(c);N_PINR(D),N_SPINB(f)::R1(D)
- Refutation
- R(i);N_SPINR(i),XQ(I)
- Try
- Q(I);
- Threat
- QAR1(I),XR(i)
- Vars
- B(c);CHECK,OGATE,XR(D)::P(C),XB(c)
- R(d);N_GUARD,N_SPINB(f)::B(A),XS(e)
- R(i);OGATE::QAR1(I)
- B(c);N_PINR(D),N_SPINS(e)::R1(D)
- B(c);N_PINR(D),N_SPINB(f)::R1(D)
- Refutation
- R(i);XP(G)
- Try
- Q(I);P_PINR(i)
- Threat
- QAR1(I),XR(i)
- Vars
- B(c);CHECK,OGATE,XR(D)::P(C),XB(c)
- R(d);N_GUARD,N_SPINB(f)::B(A),XS(e)
- R(i);OGATEB::QAR2(I),XR(i)
- B(c);N_PINR(D),N_SPINS(e)::R1(D)
- B(c);N_PINR(D),N_SPINB(f)::R1(D)
- Refutation
- R(i);N_SPINR(i),XQ(I)
- Try
- Actual
- Q(I);
- Threat
- QAR1(I),XR(i)
- Vars
- B(c);CHECK,OGATE,XR(D)::P(C),XB(c)
- R(i);OGATE,XP(G)::QAB1(I),XR(i)
- R(d);N_GUARD,N_SPINB(f)::B(A),XS(e)
- R(i);OGATEB::QAR2(I),XR(i)
- R(i);OGATEB::QAR(I),XR(i)
- B(c);N_PINR(D),N_SPINS(e)::R1(D)
- B(c);N_PINR(D),N_SPINB(f)::R1(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).