MESON Chess Problem Database
Problem Display
PID: 6195 (8/pR5K/BNk5/p1p5/2ppP1pp/6B1/8/1qn4Q w - - 0 1)
Mansfield, Comins
Tijdschrift vd NSB, 1927
#2
7 + 10
| 4797 | A Genius of the Two-mover | 1936 |
| 3202 | Complete Mansfield/I | 1996 |
SOLUTION
- SOUND
- Sets
- 1...Qxe4+
- 2.Qxe4#
- 1...Qa1
- 2.e5#
- 1...Qb4
- 2.e5#
- 1...Qb5
- 2.e5#
- 1...Qxb6
- 2.e5#
- 1...d3
- 2.e5#
- 1...hxg3
- 2.Qh6#
- 1...axb6
- 2.Rc7#
- 1...Qxe4+
- Tries
- 1.Sa4?
- threat
- 2.Rc7#
- 1...Qxe4+
- 2.Qxe4#
- 1...hxg3
- 2.Qh6#
- 1...Qb6
- 2.e5#
- 1...Qxb7+!
- threat
- 1.Sxc4?
- threat
- 2.Sxa5#
- 2.Rc7#
- 1...Qxe4+
- 2.Qxe4#
- 1...hxg3
- 2.Qh6#
- 1...Qa2
- 2.Rc7#
- 1...Qa1
- 2.Rc7#
- 2.e5#
- 1...Qb4
- 2.Rc7#
- 2.e5#
- 1...Qb5
- 2.Rc7#
- 2.e5#
- 1...Qb6
- 2.e5#
- 1...Sb3
- 2.Rc7#
- 1...a4
- 2.Sa5#
- 2.Rc7#
- 1...Qxb7+!
- threat
- 1.Sd7?
- threat
- 2.Sb8#
- 2.Rc7#
- 1...Qxe4+
- 2.Qxe4#
- 1...hxg3
- 2.Qh6#
- 1...Qb6
- 2.Sb8#
- 2.e5#
- 1...Qxb7!
- threat
- 1.Sa8?
- threat
- 2.Rc7#
- 1...Qxe4+
- 2.Qxe4#
- 1...hxg3
- 2.Qh6#
- 1...Qb6
- 2.e5#
- 1...Qxb7+!
- threat
- 1.Sc8?
- threat
- 2.Sxa7#
- 2.Se7#
- 2.Rc7#
- 1...Qxe4+
- 2.Qxe4#
- 1...hxg3
- 2.Qh6#
- 1...Qb6
- 2.Se7#
- 2.e5#
- 1...Qxb7+!
- threat
- 1.Re7?
- threat
- 2.Re6#
- 1...Kxb6
- 2.Re6#
- 1...Qxb6
- 2.e5#
- 1...hxg3
- 2.Qh6#
- 1...axb6
- 2.Rc7#
- 1...Qxe4+!
- threat
- 1.Rf7?
- threat
- 2.Rf6#
- 1...Kxb6
- 2.Rf6#
- 1...Qxb6
- 2.e5#
- 1...hxg3
- 2.Qh6#
- 1...axb6
- 2.Rc7#
- 1...Qxe4+!
- threat
- 1.Qf3?
- threat
- 2.Qf6#
- 1...Qxe4+
- 2.Qxe4#
- 1...gxf3!
- threat
- 1.Sa4?
- Keys
- 1.Rg7!
- threat
- 2.Rg6#
- 1...Kxb6
- 2.Rg6#
- 1...Qxb6
- 2.e5#
- 1...hxg3
- 2.Qh6#
- 1...axb6
- 2.Rc7#
- threat
- 1.Rg7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 5
- Sets
- Q(a);CHECK,OGATE,P_SPINQ(a),XP(C)::QAB(A),XQ(a)
- Q(a);N_PINP(C)::QAB(A)+P(C)
- Q(a);N_PINP(C),XS(E)::QAB(A)+P(C)
- P(d);N_PINP(C)::QAB(A)+P(C)
- P(f);OGATE,XB(B)::QAR(A)
- P(j);SBLOCK,XS(E)::R1(F)
- Tries
- Try
- S(E);
- Threat
- R1(F)
- Vars
- Q(a);CHECK,OGATE,P_SPINQ(a),XP(C)::QAB(A),XQ(a)
- P(f);OGATE,XB(B)::QAR(A)
- Q(a);N_PINP(C)::QAB(A)+P(C)
- Refutation
- Q(a);CHECK,N_PINP(C),XR(F)
- Try
- S(E);XP(c)
- Threat
- DUALS(2)
- Vars
- Q(a);CHECK,OGATE,P_SPINQ(a),XP(C)::QAB(A),XQ(a)
- P(f);OGATE,XB(B)::QAR(A)
- Q(a);N_PINP(C)::R1(F)
- Q(a);N_PINP(C)::QAB(A)+P(C)
- S(b);::R1(F)
- Refutation
- Q(a);CHECK,N_PINP(C),XR(F)
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- Q(a);CHECK,OGATE,P_SPINQ(a),XP(C)::QAB(A),XQ(a)
- P(f);OGATE,XB(B)::QAR(A)
- Refutation
- Q(a);N_PINP(C),P_PINS(E),XR(F)
- Try
- S(E);
- Threat
- R1(F)
- Vars
- Q(a);CHECK,OGATE,P_SPINQ(a),XP(C)::QAB(A),XQ(a)
- P(f);OGATE,XB(B)::QAR(A)
- Q(a);N_PINP(C)::QAB(A)+P(C)
- Refutation
- Q(a);CHECK,N_PINP(C),XR(F)
- Try
- S(E);
- Threat
- DUALS(3)
- Vars
- Q(a);CHECK,OGATE,P_SPINQ(a),XP(C)::QAB(A),XQ(a)
- P(f);OGATE,XB(B)::QAR(A)
- Refutation
- Q(a);CHECK,N_PINP(C),XR(F)
- Try
- R(F);
- Threat
- R(F)
- Vars
- K(i);P-FLIGHT,XS(E)::R(F)
- Q(a);N_PINP(C),SBLOCK,XS(E)::QAB(A)+P(C)
- P(f);OGATE,XB(B)::QAR(A)
- P(j);SBLOCK,XS(E)::R1(F)
- Refutation
- Q(a);CHECK,P_SPINQ(a),XP(C)
- Try
- R(F);
- Threat
- R(F)
- Vars
- K(i);P-FLIGHT,XS(E)::R(F)
- Q(a);N_PINP(C),SBLOCK,XS(E)::QAB(A)+P(C)
- P(f);OGATE,XB(B)::QAR(A)
- P(j);SBLOCK,XS(E)::R1(F)
- Refutation
- Q(a);CHECK,P_SPINQ(a),XP(C)
- Try
- Q(A);
- Threat
- QAR(A)
- Vars
- Q(a);CHECK,OGATE,P_SPINQ(a),XP(C)::QAB(A),XQ(a)
- Refutation
- P(e);XQ(A)
- Try
- Actual
- R(F);
- Threat
- R(F)
- Vars
- K(i);P-FLIGHT,XS(E)::R(F)
- Q(a);N_PINP(C),SBLOCK,XS(E)::QAB(A)+P(C)
- P(f);OGATE,XB(B)::QAR(A)
- P(j);SBLOCK,XS(E)::R1(F)
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).