MESON Chess Problem Database
Problem Display
PID: 81923 (1K2R3/4B1P1/1ppprpp1/4kpr1/bN1b3Q/6N1/2B5/q2R4 w - - 0 1)
Ahues, Herbert Siegfried Oskar
1st Prize, Norsk Sjakkblad, 1997
#2
9 + 12
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qb1
- 2.Qxd4#
- 1...Qc1
- 2.Qxd4#
- 1...Qa2
- 2.Qxd4#
- 1...Qa3
- 2.Qxd4#
- 1...Rxg3
- 2.Bxf6#
- 1...Rh5
- 2.Bxf6#
- 1...Rxe7
- 2.Rxe7#
- 1...Bg1
- 2.Bxd6#
- 1...Bb2
- 2.Bxd6#
- 1...Bf2
- 2.Bxd6#
- 1...Bc3
- 2.Bxd6#
- 1...Be3
- 2.Bxd6#
- 1...d5
- 2.Sd3#
- 1...Qb1
- Tries
- 1.Kc7?
- threat
- 2.Bxd6#
- 1...Rxe7+
- 2.Rxe7#
- 1...d5
- 2.Sd3#
- 2.Bd6#
- 1...Bc5!
- threat
- 1.Se4?
- threat
- 2.Bxd6#
- 2.Bxf6#
- 1...Rxe7
- 2.Rxe7#
- 1...fxe4
- 2.Qxe4#
- 1...Rg4
- 2.Bxd6#
- 1...Bc5
- 2.Bxf6#
- 1...d5
- 2.Sd3#
- 2.Bd6#
- 2.Bxf6#
- 1...f4!
- threat
- 1.Sh5?
- threat
- 2.Bxf6#
- 2.Qf4#
- 1...Rxh5
- 2.Bxf6#
- 1...Rxe7
- 2.Rxe7#
- 1...Qc1
- 2.Bxf6#
- 2.Qxd4#
- 1...Rg4
- 2.Bxf6#
- 1...Be3
- 2.Bxd6#
- 2.Bxf6#
- 1...f4
- 2.Bxf6#
- 2.Qxf4#
- 1...d5
- 2.Sd3#
- 2.Qf4#
- 1...gxh5!
- threat
- 1.Re1+?
- 1...Be3
- 2.Rxe3#
- 1...Qxe1!
- 1...Be3
- 1.Rxd4?
- threat
- 2.Sd3#
- 2.Bxd6#
- 2.Qf4#
- 1...Rxg3
- 2.Bxd6#
- 2.Bxf6#
- 2.Qf4#
- 1...Rxe7
- 2.Rxe7#
- 1...Bxc2
- 2.Sxc6#
- 2.Bxd6#
- 2.Qf4#
- 1...Rg4
- 2.Bxf6#
- 1...f4
- 2.Re4#
- 2.Qxf4#
- 1...Qc3
- 2.Bxd6#
- 2.Qf4#
- 1...Qc1
- 2.Sd3#
- 2.Bxd6#
- 1...Qd1
- 2.Bxd6#
- 2.Qf4#
- 1...Qf1
- 2.Bxd6#
- 1...Qa3
- 2.Bxd6#
- 2.Qf4#
- 1...Bb5
- 2.Bxd6#
- 2.Qf4#
- 1...d5
- 2.Sd3#
- 2.Qf4#
- 1...Qxd4!
- threat
- 1.Qxg5?
- threat
- 2.Bxf6#
- 1...Rxe7
- 2.Rxe7#
- 1...d5
- 2.Sd3#
- 1...fxg5!
- threat
- 1.g8S?
- threat
- 2.Bxf6#
- 1...Rxe7
- 2.Rxe7#
- 1...d5
- 2.Sd3#
- 1...Rg4!
- threat
- 1.Kc7?
- Keys
- 1.Se2!
- threat
- 2.Qf4#
- 1...Rxe7
- 2.Rxe7#
- 1...Qc1
- 2.Qxd4#
- 1...Rg4
- 2.Bxf6#
- 1...Be3
- 2.Bxd6#
- 1...f4
- 2.Qxf4#
- threat
- 1.Se2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 10
- Sets
- Q(a);N_GUARD::QAB1(E),XB(c)
- R(f);XS(C)::B(F),XP(k)
- R(f);::B(F),XP(k)
- R(j);OGATE,P_SPINR(j),XB(F)::R(I),XR(j)
- B(c);::B(F),XP(i)
- P(i);SBLOCK::S(D)
- Tries
- Try
- K(H);S_FLIGHT
- Threat
- B(F),XP(i)
- Vars
- R(j);CHECK,OGATE,P_SPINR(j),XB(F)::R(I),XR(j)
- Refutation
- B(c);
- Try
- S(C);
- Threat
- DUALS(2)
- Vars
- R(j);OGATE,P_SPINR(j),XB(F)::R(I),XR(j)
- P(e);OGATE,XS(C)::QAR1(E),XP(e)
- R(f);::B(F),XP(i)
- B(c);::B(F),XP(k)
- Refutation
- P(e);
- Try
- S(C);
- Threat
- DUALS(2)
- Vars
- R(f);XS(C)::B(F),XP(k)
- R(j);OGATE,P_SPINR(j),XB(F)::R(I),XR(j)
- R(f);::B(F),XP(k)
- Refutation
- P(l);XS(C)
- Try
- R(A);CHECK
- Vars
- B(c);N_GUARD,P_SPINB(c)::R(A),XB(c)
- Refutation
- Q(a);XR(A)
- Try
- R(A);XB(c)
- Threat
- DUALS(3)
- Vars
- R(j);OGATE,P_SPINR(j),XB(F)::R(I),XR(j)
- R(f);::B(F),XP(k)
- Q(a);::B(F),XP(i)
- Refutation
- Q(a);XR(A)
- Try
- Q(E);P_PINP(e),XR(f)
- Threat
- B(F),XP(k)
- Vars
- R(j);OGATE,P_SPINR(j),XB(F)::R(I),XR(j)
- P(i);SBLOCK::S(D)
- Refutation
- P(k);N_SPINP(e),XQ(E)
- Try
- P(G);
- Threat
- B(F),XP(k)
- Vars
- R(j);OGATE,P_SPINR(j),XB(F)::R(I),XR(j)
- P(i);SBLOCK::S(D)
- Refutation
- R(f);
- Try
- Actual
- S(C);
- Threat
- QAB1(E)
- Vars
- R(j);OGATE,P_SPINR(j),XB(F)::R(I),XR(j)
- Q(a);N_GUARD::QAB1(E),XB(c)
- R(f);::B(F),XP(k)
- B(c);::B(F),XP(i)
- P(e);::QAB1(E),XP(e)
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).