MESON Chess Problem Database
Problem Display
PID: 51821 (8/4K1p1/4p1k1/7R/4p2p/6q1/P3B3/5RQ1 w - - 0 1)
Korponai, Jozsef
2nd Prize, Elet es Tudomany, 1977
#2
6 + 6
| 3310 | 2345 Chess Problems | 1997 |
SOLUTION
- SOUND
- Sets
- 1...Qxg1
- 2.Rxg1#
- 1...Qg2
- 2.Qxg2#
- 1...Qg4
- 2.Qxg4#
- 1...Qg5+
- 2.Qxg5#
- 1...h3
- 2.Qxg3#
- 1...e5
- 2.Qb6#
- 1...Qxg1
- Tries
- 1.Kxe6?
- 1...Qg4+
- 2.Qxg4#
- 1...Qxg1
- 2.Rxg1#
- 1...Qg2
- 2.Qxg2#
- 1...Qg5
- 2.Qxg5#
- 1...h3
- 2.Qxg3#
- 1...e3!
- 1...Qg4+
- 1.Bd1?
- 1...Qg5+
- 2.Qxg5#
- 1...Qxg1
- 2.Rxg1#
- 1...Qg4
- 2.Qxg4#
- 1...Qg2
- 2.Qxg2#
- 1...h3
- 2.Qxg3#
- 1...e5
- 2.Qb6#
- 1...e3!
- 1...Qg5+
- 1.Bb5?
- threat
- 2.Be8#
- 1...Qg5+
- 2.Qxg5#
- 1...Kxh5!
- threat
- 1.Rb1?
- 1...Qg5+
- 2.Qxg5#
- 1...Qxg1
- 2.Rxg1#
- 1...Qg4
- 2.Qxg4#
- 1...Qg2
- 2.Qxg2#
- 1...h3
- 2.Qxg3#
- 1...e5
- 2.Rb6#
- 2.Qb6#
- 1...e3!
- 1...Qg5+
- 1.Rc1?
- 1...Qg5+
- 2.Qxg5#
- 1...Qxg1
- 2.Rxg1#
- 1...Qg4
- 2.Qxg4#
- 1...Qg2
- 2.Qxg2#
- 1...h3
- 2.Qxg3#
- 1...e5
- 2.Rc6#
- 2.Qb6#
- 1...e3!
- 1...Qg5+
- 1.Rd1?
- 1...Qg5+
- 2.Qxg5#
- 1...Qxg1
- 2.Rxg1#
- 1...Qg4
- 2.Qxg4#
- 1...Qg2
- 2.Qxg2#
- 1...h3
- 2.Qxg3#
- 1...e5
- 2.Rd6#
- 2.Qb6#
- 1...e3!
- 1...Qg5+
- 1.Re1?
- 1...Qg5+
- 2.Qxg5#
- 1...Qxg1
- 2.Rxg1#
- 1...Qg4
- 2.Qxg4#
- 1...Qg2
- 2.Qxg2#
- 1...h3
- 2.Qxg3#
- 1...e5
- 2.Qb6#
- 1...e3!
- 1...Qg5+
- 1.Rf4?
- 1...Qg5+
- 2.Qxg5#
- 1...Qg4
- 2.Qxg4#
- 1...e3
- 2.Qb1#
- 1...Qg2
- 2.Qxg2#
- 1...h3
- 2.Qxg3#
- 1...e5
- 2.Qb6#
- 1...Qxg1!
- 1...Qg5+
- 1.Rf7?
- 1...Qg5+
- 2.Qxg5#
- 1...Qg4
- 2.Qxg4#
- 1...e3
- 2.Qb1#
- 1...Qg2
- 2.Qxg2#
- 1...h3
- 2.Qxg3#
- 1...e5
- 2.Qb6#
- 1...Qxg1!
- 1...Qg5+
- 1.Rf8?
- 1...Qg5+
- 2.Qxg5#
- 1...Qg4
- 2.Qxg4#
- 1...e3
- 2.Qb1#
- 1...Qg2
- 2.Qxg2#
- 1...h3
- 2.Qxg3#
- 1...e5
- 2.Qb6#
- 1...Qxg1!
- 1...Qg5+
- 1.Qg2?
- threat
- 2.Qxe4#
- 1...Qg5+
- 2.Qxg5#
- 1...Qg4
- 2.Qxg4#
- 1...e3
- 2.Qe4#
- 1...Qxg2!
- threat
- 1.a3?
- 1...Qg5+
- 2.Qxg5#
- 1...Qxg1
- 2.Rxg1#
- 1...Qg4
- 2.Qxg4#
- 1...Qg2
- 2.Qxg2#
- 1...h3
- 2.Qxg3#
- 1...e5
- 2.Qb6#
- 1...e3!
- 1...Qg5+
- 1.a4?
- 1...Qg5+
- 2.Qxg5#
- 1...Qxg1
- 2.Rxg1#
- 1...Qg4
- 2.Qxg4#
- 1...Qg2
- 2.Qxg2#
- 1...h3
- 2.Qxg3#
- 1...e5
- 2.Qb6#
- 1...e3!
- 1...Qg5+
- 1.Kxe6?
- Keys
- 1.Ra1!
- 1...Qg5+
- 2.Qxg5#
- 1...Qxg1
- 2.Rxg1#
- 1...Qg4
- 2.Qxg4#
- 1...e3
- 2.Qb1#
- 1...Qg2
- 2.Qxg2#
- 1...h3
- 2.Qxg3#
- 1...e5
- 2.Qb6#
- 1...Qg5+
- 1.Ra1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- Q(a);N_SPINQ(a),OGATE,XQ(B)::R(A),XQ(a)
- Q(a);OGATEB::QAR(B),XQ(a)
- Q(a);OGATE::QAR2(B),XQ(a)
- Q(a);CHECK,OGATE::QAR1(B),XQ(a)
- P(c);N_GUARD::QAR(B),XQ(a)
- P(d);OGATEB::QAR(B)
- Tries
- Try
- K(F);P-FLIGHT,XP(d)
- Vars
- Q(a);CHECK,OGATE::QAR2(B),XQ(a)
- Q(a);N_SPINQ(a),OGATE,XQ(B)::R(A),XQ(a)
- Q(a);OGATEB::QAR(B),XQ(a)
- Q(a);OGATE::QAR1(B),XQ(a)
- P(c);N_GUARD::QAR(B),XQ(a)
- Refutation
- P(b);
- Try
- B(D);
- Vars
- Q(a);CHECK,OGATE::QAR1(B),XQ(a)
- Q(a);N_SPINQ(a),OGATE,XQ(B)::R(A),XQ(a)
- Q(a);OGATE::QAR2(B),XQ(a)
- Q(a);OGATEB::QAR(B),XQ(a)
- P(c);N_GUARD::QAR(B),XQ(a)
- P(d);OGATEB::QAR(B)
- Refutation
- P(b);
- Try
- B(D);
- Threat
- B(D)
- Vars
- Q(a);CHECK,OGATE::QAR1(B),XQ(a)
- Refutation
- K(e);N_SPINQ(a),S_FLIGHT,XR(E)
- Try
- R(A);
- Vars
- Q(a);CHECK,OGATE::QAR1(B),XQ(a)
- Q(a);N_SPINQ(a),OGATE,XQ(B)::R(A),XQ(a)
- Q(a);OGATE::QAR2(B),XQ(a)
- Q(a);OGATEB::QAR(B),XQ(a)
- P(c);N_GUARD::QAR(B),XQ(a)
- Refutation
- P(b);
- Try
- R(A);
- Vars
- Q(a);CHECK,OGATE::QAR1(B),XQ(a)
- Q(a);N_SPINQ(a),OGATE,XQ(B)::R(A),XQ(a)
- Q(a);OGATE::QAR2(B),XQ(a)
- Q(a);OGATEB::QAR(B),XQ(a)
- P(c);N_GUARD::QAR(B),XQ(a)
- Refutation
- P(b);
- Try
- R(A);
- Vars
- Q(a);CHECK,OGATE::QAR1(B),XQ(a)
- Q(a);N_SPINQ(a),OGATE,XQ(B)::R(A),XQ(a)
- Q(a);OGATE::QAR2(B),XQ(a)
- Q(a);OGATEB::QAR(B),XQ(a)
- P(c);N_GUARD::QAR(B),XQ(a)
- Refutation
- P(b);
- Try
- R(A);
- Vars
- Q(a);CHECK,OGATE::QAR1(B),XQ(a)
- Q(a);N_SPINQ(a),OGATE,XQ(B)::R(A),XQ(a)
- Q(a);OGATE::QAR2(B),XQ(a)
- Q(a);OGATEB::QAR(B),XQ(a)
- P(c);N_GUARD::QAR(B),XQ(a)
- P(d);OGATEB::QAR(B)
- Refutation
- P(b);
- Try
- R(A);
- Vars
- Q(a);CHECK,OGATE::QAR1(B),XQ(a)
- Q(a);OGATE::QAR2(B),XQ(a)
- P(b);OGATEB::QAB(B)
- Q(a);OGATEB::QAR(B),XQ(a)
- P(c);N_GUARD::QAR(B),XQ(a)
- P(d);OGATEB::QAR(B)
- Refutation
- Q(a);N_SPINQ(a),XQ(B)
- Try
- R(A);
- Vars
- Q(a);CHECK,OGATE::QAR1(B),XQ(a)
- Q(a);OGATE::QAR2(B),XQ(a)
- P(b);OGATEB::QAB(B)
- Q(a);OGATEB::QAR(B),XQ(a)
- P(c);N_GUARD::QAR(B),XQ(a)
- P(d);OGATEB::QAR(B)
- Refutation
- Q(a);N_SPINQ(a),XQ(B)
- Try
- R(A);
- Vars
- Q(a);CHECK,OGATE::QAR1(B),XQ(a)
- Q(a);OGATE::QAR2(B),XQ(a)
- P(b);OGATEB::QAB(B)
- Q(a);OGATEB::QAR(B),XQ(a)
- P(c);N_GUARD::QAR(B),XQ(a)
- P(d);OGATEB::QAR(B)
- Refutation
- Q(a);N_SPINQ(a),XQ(B)
- Try
- Q(B);
- Threat
- QAB(B),XP(b)
- Vars
- Q(a);CHECK,OGATE::QAR1(B),XQ(a)
- Q(a);OGATE::QAR2(B),XQ(a)
- P(b);::QAB(B)
- Refutation
- Q(a);N_SPINQ(a),XQ(B)
- Try
- P(C);
- Vars
- Q(a);CHECK,OGATE::QAR1(B),XQ(a)
- Q(a);N_SPINQ(a),OGATE,XQ(B)::R(A),XQ(a)
- Q(a);OGATE::QAR2(B),XQ(a)
- Q(a);OGATEB::QAR(B),XQ(a)
- P(c);N_GUARD::QAR(B),XQ(a)
- P(d);OGATEB::QAR(B)
- Refutation
- P(b);
- Try
- P(C);
- Vars
- Q(a);CHECK,OGATE::QAR1(B),XQ(a)
- Q(a);N_SPINQ(a),OGATE,XQ(B)::R(A),XQ(a)
- Q(a);OGATE::QAR2(B),XQ(a)
- Q(a);OGATEB::QAR(B),XQ(a)
- P(c);N_GUARD::QAR(B),XQ(a)
- P(d);OGATEB::QAR(B)
- Refutation
- P(b);
- Try
- Actual
- R(A);
- Vars
- Q(a);CHECK,OGATE::QAR1(B),XQ(a)
- Q(a);N_SPINQ(a),OGATE,XQ(B)::R(A),XQ(a)
- Q(a);OGATE::QAR2(B),XQ(a)
- P(b);OGATEB::QAB(B)
- Q(a);OGATEB::QAR(B),XQ(a)
- P(c);N_GUARD::QAR(B),XQ(a)
- P(d);OGATEB::QAR(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).