MESON Chess Problem Database
Problem Display
PID: 150467 (K7/1Nb1BR2/1p2k1P1/n3r3/3Qn3/3B4/4R3/4r3 w - - 0 1)
Ahlheim, Karl-Heinz
Source?, 1998
#2
8 + 7
| 15148 | Sadier Collection | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Bb8
- 2.Sd8#
- 1...Bd8
- 2.Sxd8#
- 1...Sd2
- 2.Bf5#
- 1...Sf2
- 2.Bf5#
- 1...Sc3
- 2.Bf5#
- 1...Sc5
- 2.Bf5#
- 1...Sg5
- 2.Bf5#
- 1...Bb8
- Tries
- 1.Bc4+?
- 1...Rd5
- 2.Qxd5#
- 1...Sxc4!
- 1...Rd5
- 1.Ba3?
- threat
- 2.Qd7#
- 1...Rb5
- 2.Rf6#
- 1...Rd5
- 2.Qf6#
- 1...Rf5
- 2.Re7#
- 1...Rg5
- 2.Rf6#
- 1...Rh5
- 2.Rf6#
- 1...Bd6
- 2.Sd8#
- 1...Sc5
- 2.Bf5#
- 1...Sd6
- 2.Qxe5#
- 1...Sf6
- 2.Re7#
- 1...Rc5!
- threat
- 1.Bb4?
- threat
- 2.Qd7#
- 1...Rb5
- 2.Rf6#
- 1...Rd5
- 2.Qf6#
- 1...Rf5
- 2.Re7#
- 1...Rg5
- 2.Rf6#
- 1...Rh5
- 2.Rf6#
- 1...Bd6
- 2.Sd8#
- 1...Sc5
- 2.Bf5#
- 1...Sd6
- 2.Qxe5#
- 1...Sf6
- 2.Re7#
- 1...Rc5!
- threat
- 1.Bc5?
- threat
- 2.Qd7#
- 1...Sxc5
- 2.Bf5#
- 1...Rd5
- 2.Qf6#
- 1...Rf5
- 2.Re7#
- 1...Rg5
- 2.Rf6#
- 1...Rh5
- 2.Rf6#
- 1...Bd6
- 2.Sd8#
- 1...Sd6
- 2.Qxe5#
- 1...Sf6
- 2.Re7#
- 1...Rxc5!
- threat
- 1.Bd8?
- threat
- 2.Qd7#
- 1...Rc5
- 2.Rf6#
- 1...Rb5
- 2.Rf6#
- 1...Rd5
- 2.Qf6#
- 1...Rf5
- 2.Re7#
- 1...Rg5
- 2.Rf6#
- 1...Rh5
- 2.Rf6#
- 1...Sc5
- 2.Bf5#
- 2.Rf6#
- 1...Sd6
- 2.Qxe5#
- 1...Sf6
- 2.Rxf6#
- 2.Re7#
- 1...Bd6!
- threat
- 1.Bc4+?
- Keys
- 1.Bf8!
- threat
- 2.Qd7#
- 1...Rc5
- 2.Rf6#
- 1...Rb5
- 2.Rf6#
- 1...Rd5
- 2.Qf6#
- 1...Rf5
- 2.Re7#
- 1...Rg5
- 2.Rf6#
- 1...Rh5
- 2.Rf6#
- 1...Bd6
- 2.Sd8#
- 1...Sc5
- 2.Bf5#
- 1...Sd6
- 2.Qxe5#
- 1...Sf6
- 2.Re7#
- threat
- 1.Bf8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 9
- REMOVED MATES = 6
- Sets
- B(g);N_GUARD::S(E)
- B(g);N_GUARD::S(E),XB(g)
- S(b);OGATE,P_SPINR(d)::B(B)
- Tries
- Try
- B(B);CHECK
- Vars
- R(d);N_GUARD,P_SPINR(d),P_SPINS(b)::QAB1(C),XR(d)
- Refutation
- S(c);XB(B)
- Try
- B(F);
- Threat
- QAB1(C)
- Vars
- R(d);P_SPINS(b)::R1(G)
- R(d);OGATE,P_SPINS(b),SBLOCK::QAR1(C)
- R(d);P_SPINS(b),SBLOCK::R1(G)
- B(g);N_GUARD::S(E)
- S(b);OGATE,P_SPINR(d)::B(B)
- S(b);P_SPINR(d),S_CUTB(g)::QAR1(C),XR(d)
- S(b);P_SPINR(d),SBLOCK::R1(G)
- Refutation
- R(d);P_SPINS(b)
- Try
- B(F);
- Threat
- QAB1(C)
- Vars
- R(d);P_SPINS(b)::R1(G)
- R(d);OGATE,P_SPINS(b),SBLOCK::QAR1(C)
- R(d);P_SPINS(b),SBLOCK::R1(G)
- B(g);N_GUARD::S(E)
- S(b);OGATE,P_SPINR(d)::B(B)
- S(b);P_SPINR(d),S_CUTB(g)::QAR1(C),XR(d)
- S(b);P_SPINR(d),SBLOCK::R1(G)
- Refutation
- R(d);P_SPINS(b)
- Try
- B(F);
- Threat
- QAB1(C)
- Vars
- S(b);OGATE,P_SPINR(d),XB(F)::B(B)
- R(d);OGATE,P_SPINS(b),SBLOCK::QAR1(C)
- R(d);P_SPINS(b),SBLOCK::R1(G)
- R(d);P_SPINS(b)::R1(G)
- B(g);N_GUARD::S(E)
- S(b);P_SPINR(d),S_CUTB(g)::QAR1(C),XR(d)
- S(b);P_SPINR(d),SBLOCK::R1(G)
- Refutation
- R(d);P_SPINS(b),XB(F)
- Try
- B(F);
- Threat
- QAB1(C)
- Vars
- R(d);P_SPINS(b)::R1(G)
- R(d);OGATE,P_SPINS(b),SBLOCK::QAR1(C)
- R(d);P_SPINS(b),SBLOCK::R1(G)
- S(b);P_SPINR(d),S_CUTB(g)::QAR1(C),XR(d)
- Refutation
- B(g);
- Try
- Actual
- B(F);
- Threat
- QAB1(C)
- Vars
- R(d);P_SPINS(b)::R1(G)
- R(d);OGATE,P_SPINS(b),SBLOCK::QAR1(C)
- R(d);P_SPINS(b),SBLOCK::R1(G)
- B(g);N_GUARD::S(E)
- S(b);OGATE,P_SPINR(d)::B(B)
- S(b);P_SPINR(d),S_CUTB(g)::QAR1(C),XR(d)
- S(b);P_SPINR(d),SBLOCK::R1(G)
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).