MESON Chess Problem Database
Problem Display
PID: 90275 (8/4p3/1N1pP3/3K4/1p6/kp6/q7/RQ6 w - - 0 1)
Goldschmidt, Ervin
Die Schwalbe, 1932
#2
5 + 6
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qxa1
- 2.Qxa1#
- 1...b2+
- 2.Qxa2#
- 1...Qxa1
- Tries
- 1.Kc4?
- threat
- 2.Qxb3#
- 1...b2+
- 2.Rxa2#
- 2.Qxa2#
- 1...d5+!
- threat
- 1.Kd4?
- 1...Qxa1+
- 2.Qxa1#
- 1...b2
- 2.Qxa2#
- 1...d5!
- 1...Qxa1+
- 1.Ke4?
- 1...Qxa1
- 2.Qxa1#
- 1...b2
- 2.Qxa2#
- 1...d5+!
- 1...Qxa1
- 1.Kc6?
- 1...Qxa1
- 2.Qxa1#
- 1...b2
- 2.Qxa2#
- 1...d5!
- 1...Qxa1
- 1.Sa4?
- 1...b2+
- 2.Qxa2#
- 1...Qxa1
- 2.Qxa1#
- 1...Kxa4!
- 1...b2+
- 1.Sd7?
- 1...b2+
- 2.Qxa2#
- 1...Qxa1
- 2.Qxa1#
- 1...Ka4!
- 1...b2+
- 1.Sa8?
- 1...b2+
- 2.Qxa2#
- 1...Qxa1
- 2.Qxa1#
- 1...Ka4!
- 1...b2+
- 1.Sc8?
- 1...b2+
- 2.Qxa2#
- 1...Qxa1
- 2.Qxa1#
- 1...Ka4!
- 1...b2+
- 1.Qe1?
- 1...Kb2
- 2.Qc1#
- 1...Qxa1
- 2.Qxa1#
- 1...b2+!
- 1...Kb2
- 1.Qf1?
- 1...Kb2
- 2.Qc1#
- 1...Qxa1
- 2.Qxa1#
- 1...b2+!
- 1...Kb2
- 1.Qg1?
- 1...Kb2
- 2.Qc1#
- 1...Qxa1
- 2.Qxa1#
- 1...b2+!
- 1...Kb2
- 1.Qh1?
- 1...Kb2
- 2.Qc1#
- 1...Qxa1
- 2.Qxa1#
- 1...b2+!
- 1...Kb2
- 1.Kc4?
- Keys
- 1.Qd1!
- 1...b2+
- 2.Sc4#
- 1...Kb2
- 2.Qc1#
- 1...Qxa1
- 2.Qxa1#
- 1...b2+
- 1.Qd1!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- Q(a);N_SPINQ(a),OGATE,XR(A)::QAR2(B),XQ(a)
- P(c);CHECK,N_GUARD::QAR1(B),XQ(a)
- Tries
- Try
- K(C);S_FLIGHT
- Threat
- QAR1(B),XP(c)
- Refutation
- P(e);CHECK
- Try
- K(C);P-FLIGHT
- Vars
- Q(a);CHECK,N_SPINQ(a),OGATE,XR(A)::QAR2(B),XQ(a)
- P(c);N_GUARD::QAR1(B),XQ(a)
- Refutation
- P(e);
- Try
- K(C);S_FLIGHT
- Vars
- Q(a);N_SPINQ(a),OGATE,XR(A)::QAR2(B),XQ(a)
- P(c);N_GUARD::QAR1(B),XQ(a)
- Refutation
- P(e);CHECK
- Try
- K(C);S_FLIGHT
- Vars
- Q(a);N_SPINQ(a),OGATE,XR(A)::QAR2(B),XQ(a)
- P(c);N_GUARD::QAR1(B),XQ(a)
- Refutation
- P(e);
- Try
- S(D);
- Vars
- P(c);CHECK,N_GUARD::QAR1(B),XQ(a)
- Q(a);N_SPINQ(a),OGATE,XR(A)::QAR2(B),XQ(a)
- Refutation
- K(b);P-FLIGHT,XS(D)
- Try
- S(D);
- Vars
- P(c);CHECK,N_GUARD::QAR1(B),XQ(a)
- Q(a);N_SPINQ(a),OGATE,XR(A)::QAR2(B),XQ(a)
- Refutation
- K(b);P-FLIGHT
- Try
- S(D);
- Vars
- P(c);CHECK,N_GUARD::QAR1(B),XQ(a)
- Q(a);N_SPINQ(a),OGATE,XR(A)::QAR2(B),XQ(a)
- Refutation
- K(b);P-FLIGHT
- Try
- S(D);
- Vars
- P(c);CHECK,N_GUARD::QAR1(B),XQ(a)
- Q(a);N_SPINQ(a),OGATE,XR(A)::QAR2(B),XQ(a)
- Refutation
- K(b);P-FLIGHT
- Try
- Q(B);
- Vars
- K(b);N_SPINQ(a),S_FLIGHT::QAB1(B)
- Q(a);N_SPINQ(a),OGATE,XR(A)::QAR2(B),XQ(a)
- Refutation
- P(c);CHECK
- Try
- Q(B);
- Vars
- K(b);N_SPINQ(a),S_FLIGHT::QAB1(B)
- Q(a);N_SPINQ(a),OGATE,XR(A)::QAR2(B),XQ(a)
- Refutation
- P(c);CHECK
- Try
- Q(B);
- Vars
- K(b);N_SPINQ(a),S_FLIGHT::QAB1(B)
- Q(a);N_SPINQ(a),OGATE,XR(A)::QAR2(B),XQ(a)
- Refutation
- P(c);CHECK
- Try
- Q(B);
- Vars
- K(b);N_SPINQ(a),S_FLIGHT::QAB1(B)
- Q(a);N_SPINQ(a),OGATE,XR(A)::QAR2(B),XQ(a)
- Refutation
- P(c);CHECK
- Try
- Actual
- Q(B);
- Vars
- P(c);CHECK::S(D)
- K(b);N_SPINQ(a),S_FLIGHT::QAB1(B)
- Q(a);N_SPINQ(a),OGATE,XR(A)::QAR2(B),XQ(a)
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).