MESON Chess Problem Database
Problem Display
PID: 4 (8/K4p1R/Q5N1/6k1/6p1/3BN1p1/5q2/2B5 w - - 0 1)
Vilner, Yakov Semyonovich
5th Prize, 64 Shakhmatnoe obozrenie, 1930/I
#2
7 + 5
| 3174 | The Two-move Chess Problem Tradition and Development | 1966 |
| 3098 | FIDE Album (1914-1944) (I) | 1971 |
| 3310 | 2345 Chess Problems | 1997 |
| 14869 | British Championship Solving Ty. | 2011 |
SOLUTION
- SOUND
- Sets
- 1...Qxe3+
- 2.Bxe3#
- 1...Qf1
- 2.Sxf1#
- 1...Qa2
- 2.Sc2#
- 1...Qc2
- 2.Sxc2#
- 1...Qg2
- 2.Sxg2#
- 1...Qh2
- 2.Sg2#
- 1...Qf5
- 2.Sxf5#
- 1...Qxe3+
- Tries
- 1.Sh4?
- threat
- 2.Qh6#
- 1...Qxe3+
- 2.Bxe3#
- 1...Kf4
- 2.Qf6#
- 1...Qa2
- 2.Sc2#
- 1...Qf6
- 2.Sef5#
- 1...f6!
- threat
- 1.Se5?
- threat
- 2.Qh6#
- 1...Qxe3+
- 2.Bxe3#
- 1...Kf4
- 2.Qf6#
- 1...Qa2
- 2.Sc2#
- 1...Qh2
- 2.Sg2#
- 1...Qf6
- 2.Sf5#
- 1...f6!
- threat
- 1.Se7?
- threat
- 2.Qh6#
- 1...Qxe3+
- 2.Bxe3#
- 1...Kf4
- 2.Qf6#
- 1...Qa2
- 2.Sc2#
- 1...Qh2
- 2.Sg2#
- 1...Qf6
- 2.S3f5#
- 1...f6!
- threat
- 1.Sh8?
- threat
- 2.Qh6#
- 1...Qxe3+
- 2.Bxe3#
- 1...Kf4
- 2.Qf6#
- 1...Qa2
- 2.Sc2#
- 1...Qh2
- 2.Sg2#
- 1...Qf6
- 2.Sf5#
- 1...f6!
- threat
- 1.Qb5+?
- 1...Kf6
- 2.Qe5#
- 1...Qf5
- 2.Qxf5#
- 1...f5!
- 1...Kf6
- 1.Qa5+?
- 1...Kf6
- 2.Qe5#
- 1...Qf5
- 2.Qxf5#
- 1...f5!
- 1...Kf6
- 1.Sh4?
- Keys
- 1.Sf8!
- threat
- 2.Qh6#
- 1...Qxe3+
- 2.Bxe3#
- 1...Kf4
- 2.Qf6#
- 1...f6
- 2.Se6#
- 1...Qa2
- 2.Sc2#
- 1...Qh2
- 2.Sg2#
- 1...Qf6
- 2.Sf5#
- threat
- 1.Sf8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 4
- Sets
- Q(a);CHECK,OGATE,P_SPINQ(a),XS(C)::B(A),XQ(a)
- Q(a);N_PINS(C)::B(A)+S(C),XQ(a)
- Q(a);N_PINS(C),P_PINQ(D)::B(A)+S(C)
- Q(a);N_PINS(C)::B(A)+S(C)
- Tries
- Try
- S(E);
- Threat
- QAB1(D)
- Vars
- Q(a);CHECK,OGATE,P_SPINQ(a),XS(C)::B(A),XQ(a)
- K(d);S_FLIGHT::QAR2(D)
- Q(a);N_PINS(C),P_PINQ(D)::B(A)+S(C)
- Q(a);N_PINS(C)::B(A)+S(C)
- Refutation
- P(e);
- Try
- S(E);
- Threat
- QAB1(D)
- Vars
- Q(a);CHECK,OGATE,P_SPINQ(a),XS(C)::B(A),XQ(a)
- K(d);S_FLIGHT::QAR2(D)
- Q(a);N_PINS(C),P_PINQ(D)::B(A)+S(C)
- Q(a);N_PINS(C)::B(A)+S(C)
- Refutation
- P(e);
- Try
- S(E);
- Threat
- QAB1(D)
- Vars
- Q(a);CHECK,OGATE,P_SPINQ(a),XS(C)::B(A),XQ(a)
- K(d);S_FLIGHT::QAR2(D)
- Q(a);N_PINS(C),P_PINQ(D)::B(A)+S(C)
- Q(a);N_PINS(C)::B(A)+S(C)
- Refutation
- P(e);
- Try
- S(E);
- Threat
- QAB1(D)
- Vars
- Q(a);CHECK,OGATE,P_SPINQ(a),XS(C)::B(A),XQ(a)
- K(d);S_FLIGHT::QAR2(D)
- Q(a);N_PINS(C),P_PINQ(D)::B(A)+S(C)
- Q(a);N_PINS(C)::B(A)+S(C)
- Refutation
- P(e);
- Try
- Q(D);CHECK
- Vars
- K(d);S_FLIGHT::QAB1(D)
- Q(a);N_GUARD,N_PINS(C),P_SPINQ(a)::QAR1(D),XQ(a)
- Refutation
- P(e);P_SPINP(e)
- Try
- Q(D);CHECK
- Vars
- K(d);S_FLIGHT::QAB1(D)
- Q(a);N_GUARD,N_PINS(C),P_SPINQ(a)::QAR1(D),XQ(a)
- Refutation
- P(e);P_SPINP(e)
- Try
- Actual
- S(E);
- Threat
- QAB1(D)
- Vars
- Q(a);CHECK,OGATE,P_SPINQ(a),XS(C)::B(A),XQ(a)
- K(d);S_FLIGHT::QAR2(D)
- P(e);N_GUARD,SBLOCK::S(E)
- Q(a);N_PINS(C),P_PINQ(D)::B(A)+S(C)
- Q(a);N_PINS(C)::B(A)+S(C)
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).