MESON Chess Problem Database
Problem Display
PID: 97574 (4R3/3B1p2/2P1bP1p/2P4p/4k2K/3N1NR1/3Q4/B7 w - - 0 1)
Burger, Robert Eugene
US Problem Bulletin, 1992
#2
11 + 5
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Kf5
- 2.Qf4#
- 1...Kf5
- Tries
- 1.Kxh5?
- 1...Kf5
- 2.Qf4#
- 1...Kd5!
- 1...Kf5
- 1.Sfe1?
- 1...Kf5
- 2.Qf4#
- 1...Kd5!
- 1...Kf5
- 1.Sg1?
- 1...Kf5
- 2.Qf4#
- 1...Kd5!
- 1...Kf5
- 1.Sh2?
- 1...Kf5
- 2.Qf4#
- 1...Kd5!
- 1...Kf5
- 1.Sfe5?
- 1...Kd5
- 2.Qg2#
- 1...Kf5
- 2.Qf4#
- 1...Ba2
- 2.Sf2#
- 2.Qg2#
- 1...Bb3
- 2.Sf2#
- 2.Qg2#
- 1...Bh3
- 2.Sf2#
- 1...Bc4
- 2.Sf2#
- 2.Qg2#
- 1...Bg4
- 2.Sf2#
- 1...Bd5
- 2.Sf2#
- 2.Re3#
- 2.Qe1#
- 2.Qe3#
- 2.Qf4#
- 2.Qe2#
- 2.Qg2#
- 1...Bf5
- 2.Sf2#
- 2.Qg2#
- 1...Bxd7!
- 1...Kd5
- 1.Bb2?
- 1...Kf5
- 2.Qf4#
- 1...Kd5!
- 1...Kf5
- 1.Bc3?
- 1...Kf5
- 2.Qf4#
- 1...Kd5!
- 1...Kf5
- 1.Bd4?
- 1...Kf5
- 2.Qf4#
- 1...Kd5!
- 1...Kf5
- 1.Bc8?
- 1...Kf5
- 2.Qf4#
- 1...Kd5!
- 1...Kf5
- 1.Rg2?
- 1...Kxf3
- 2.Qe2#
- 1...Kf5
- 2.Qf4#
- 1...Kd5!
- 1...Kxf3
- 1.Rg4+?
- 1...Kxf3
- 2.Se1#
- 2.Se5#
- 2.Rf4#
- 2.Qf2#
- 1...Kd5
- 2.Rd4#
- 2.Qa2#
- 1...Kf5
- 2.Qf4#
- 1...hxg4!
- 1...Kxf3
- 1.Rxe6+?
- 1...Kd5
- 2.Qa2#
- 1...Kf5
- 2.Sd4#
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Re7#
- 2.Re8#
- 2.Qf4#
- 1...fxe6!
- 1...Kd5
- 1.Re7?
- 1...Kf5
- 2.Qf4#
- 1...Kd5!
- 1...Kf5
- 1.Qc3?
- 1...Kd5
- 2.Qd4#
- 1...Kf5
- 2.Qe5#
- 1...Ke3!
- 1...Kd5
- 1.Qe3+?
- 1...Kd5
- 2.Qd4#
- 1...Kf5
- 2.Qf4#
- 2.Qe5#
- 1...Kxe3!
- 1...Kd5
- 1.Qb4+?
- 1...Ke3
- 2.Sg1#
- 1...Kd5
- 2.Sf4#
- 2.Qd4#
- 1...Kf5
- 2.Qf4#
- 1...Kxd3!
- 1...Ke3
- 1.Qf4+?
- 1...Kd5
- 2.Qd4#
- 1...Kxd3!
- 1...Kd5
- 1.Qb2?
- 1...Ke3
- 2.Sg5#
- 1...Kd5
- 2.Qd4#
- 1...Kf5
- 2.Qe5#
- 1...Kxd3!
- 1...Ke3
- 1.Qc2?
- 1...Ke3
- 2.Sg5#
- 1...Kd5
- 2.Sb4#
- 2.Sf4#
- 1...Kf5!
- 1...Ke3
- 1.Qe2+?
- 1...Kf5
- 2.Qe5#
- 1...Kd5!
- 1...Kf5
- 1.Qf2?
- 1...Kd5
- 2.Qd4#
- 1...Kf5
- 2.Sd2#
- 1...Kxd3!
- 1...Kd5
- 1.Qg2?
- threat
- 2.Sd4#
- 1...Kxd3
- 2.Se5#
- 1...Ke3
- 2.Sfe1#
- 2.Sg1#
- 2.Sd2#
- 2.Sh2#
- 2.Sd4#
- 2.Sfe5#
- 2.Sg5#
- 1...Kd5
- 2.Sd2#
- 2.Sfe5#
- 1...Kf5!
- threat
- 1.c7?
- 1...Kf5
- 2.Qf4#
- 1...Kd5!
- 1...Kf5
- 1.Kxh5?
- Keys
- 1.Qa2!
- 1...Kxd3
- 2.Sg5#
- 1...Ke3
- 2.Sg5#
- 1...Kf5
- 2.Qd5#
- 1...Kxd3
- 1.Qa2!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- K(a);S_FLIGHT::QAR1(B)
- Tries
- Try
- K(F);P-FLIGHT,XP(b)
- Vars
- K(a);S_FLIGHT::QAR1(B)
- Refutation
- K(a);N_SPINB(c),S_FLIGHT
- Try
- S(D);
- Vars
- K(a);S_FLIGHT::QAR1(B)
- Refutation
- K(a);N_SPINB(c),S_FLIGHT
- Try
- S(D);
- Vars
- K(a);S_FLIGHT::QAR1(B)
- Refutation
- K(a);N_SPINB(c),S_FLIGHT
- Try
- S(D);
- Vars
- K(a);S_FLIGHT::QAR1(B)
- Refutation
- K(a);N_SPINB(c),S_FLIGHT
- Try
- S(D);N_PINB(c)
- Vars
- K(a);S_FLIGHT::QAB(B)
- K(a);P_SPINB(c),S_FLIGHT::QAR1(B)
- B(c);::S(C)
- Refutation
- B(c);XB(J)
- Try
- B(A);
- Vars
- K(a);S_FLIGHT::QAR1(B)
- Refutation
- K(a);N_SPINB(c),S_FLIGHT
- Try
- B(A);
- Vars
- K(a);S_FLIGHT::QAR1(B)
- Refutation
- K(a);N_SPINB(c),S_FLIGHT
- Try
- B(A);
- Vars
- K(a);S_FLIGHT::QAR1(B)
- Refutation
- K(a);N_SPINB(c),S_FLIGHT
- Try
- B(J);
- Vars
- K(a);S_FLIGHT::QAR1(B)
- Refutation
- K(a);N_SPINB(c),S_FLIGHT
- Try
- R(E);
- Vars
- K(a);N_SPINB(c),S_FLIGHT,XS(D)::QAB1(B)
- K(a);S_FLIGHT::QAR1(B)
- Refutation
- K(a);N_SPINB(c),S_FLIGHT
- Try
- R(E);CHECK
- Vars
- K(a);S_FLIGHT::QAR1(B)
- Refutation
- P(b);XR(E)
- Try
- R(K);CHECK,XB(c)
- Vars
- K(a);S_FLIGHT::QAB(B)
- Refutation
- P(e);XR(K)
- Try
- R(K);
- Vars
- K(a);S_FLIGHT::QAR1(B)
- Refutation
- K(a);N_SPINB(c),S_FLIGHT
- Try
- Q(B);
- Vars
- K(a);N_SPINB(c),S_FLIGHT::QAR1(B)
- K(a);S_FLIGHT::QAR1(B)
- Refutation
- K(a);P-FLIGHT
- Try
- Q(B);CHECK
- Vars
- K(a);N_SPINB(c),S_FLIGHT::QAR1(B)
- Refutation
- K(a);P-FLIGHT,XQ(B)
- Try
- Q(B);CHECK
- Vars
- K(a);P-FLIGHT::R(E)+S(D)
- K(a);OGATE,S_FLIGHT::QAR1(B)
- Refutation
- K(a);N_SPINB(c),S_FLIGHT,XS(C)
- Try
- Q(B);CHECK
- Vars
- K(a);N_SPINB(c),OGATE,S_FLIGHT::QAR1(B)
- Refutation
- K(a);N_SPINB(c),S_FLIGHT,XS(C)
- Try
- Q(B);
- Vars
- K(a);P-FLIGHT::R(E)+S(D)
- K(a);N_SPINB(c),S_FLIGHT::QAR1(B)
- K(a);S_FLIGHT::QAR1(B)
- Refutation
- K(a);N_SPINB(c),S_FLIGHT,XS(C)
- Try
- Q(B);
- Vars
- K(a);P-FLIGHT::R(E)+S(D)
- Refutation
- K(a);S_FLIGHT
- Try
- Q(B);CHECK
- Vars
- K(a);OGATE,S_FLIGHT::QAR1(B)
- Refutation
- K(a);N_SPINB(c),S_FLIGHT
- Try
- Q(B);
- Vars
- K(a);N_SPINB(c),S_FLIGHT::QAR1(B)
- K(a);S_FLIGHT::QAR(B)+S(D)
- Refutation
- K(a);N_SPINB(c),S_FLIGHT,XS(C)
- Try
- Q(B);
- Threat
- QAB(B)+S(D)
- Vars
- K(a);N_SPINB(c),S_FLIGHT,XS(C)::R(E)+S(D),DCHECK
- Refutation
- K(a);S_FLIGHT
- Try
- P(H);
- Vars
- K(a);S_FLIGHT::QAR1(B)
- Refutation
- K(a);N_SPINB(c),S_FLIGHT
- Try
- Actual
- Q(B);
- Vars
- K(a);N_SPINB(c),S_FLIGHT,XS(C)::R(E)+S(D)
- K(a);P-FLIGHT::R(E)+S(D)
- K(a);S_FLIGHT::QAR2(B)
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).