MESON Chess Problem Database
Problem Display
PID: 18762 (8/3n4/2R3p1/R3p1Pb/1K2k1r1/5N1B/2PBP3/4Q3 w - - 0 1)
Mansfield, Comins
Chess Life, 1957
#2
10 + 6
| 3550 | Complete Mansfield/II | 1997 |
SOLUTION
- SOUND
- Sets
- 1...Kf5+
- 2.e4#
- 1...Rg1
- 2.Rc4#
- 1...Rg2
- 2.Rc4#
- 1...Rg3
- 2.Rc4#
- 1...Rf4
- 2.Rc4#
- 1...Rh4
- 2.Rc4#
- 1...Rxg5
- 2.Rc4#
- 1...Sb6
- 2.Rxe5#
- 1...Sf6
- 2.Rxe5#
- 1...Sb8
- 2.Rxe5#
- 1...Sf8
- 2.Rxe5#
- 1...Kf5+
- Tries
- 1.Ka3?
- 1...Kf5
- 2.e4#
- 1...Rxg5
- 2.Rc4#
- 1...Rg1
- 2.Rc4#
- 1...Rg2
- 2.Rc4#
- 1...Rg3
- 2.Rc4#
- 1...Rf4
- 2.Rc4#
- 1...Rh4
- 2.Rc4#
- 1...Sb6
- 2.Rxe5#
- 1...Sf6
- 2.Rxe5#
- 1...Sb8
- 2.Rxe5#
- 1...Sf8
- 2.Rxe5#
- 1...Sc5!
- 1...Kf5
- 1.Kb3?
- 1...Kf5
- 2.e4#
- 1...Rxg5
- 2.Rc4#
- 1...Rg1
- 2.Rc4#
- 1...Rg2
- 2.Rc4#
- 1...Rg3
- 2.Rc4#
- 1...Rf4
- 2.Rc4#
- 1...Rh4
- 2.Rc4#
- 1...Sb6
- 2.Rxe5#
- 1...Sf6
- 2.Rxe5#
- 1...Sb8
- 2.Rxe5#
- 1...Sf8
- 2.Rxe5#
- 1...Sc5+!
- 1...Kf5
- 1.Kc3?
- 1...Kf5
- 2.e4#
- 1...Rxg5
- 2.Sxg5#
- 2.Rc4#
- 1...Rg1
- 2.Rc4#
- 1...Rg2
- 2.Rc4#
- 1...Rg3
- 2.Rc4#
- 1...Rf4
- 2.Rc4#
- 1...Rh4
- 2.Rc4#
- 1...Sb6
- 2.Rxe5#
- 1...Sf6
- 2.Rxe5#
- 1...Sb8
- 2.Rxe5#
- 1...Sf8
- 2.Rxe5#
- 1...Sc5!
- 1...Kf5
- 1.Bc1?
- 1...Kf5+
- 2.e4#
- 1...Rxg5
- 2.Rc4#
- 1...Sb6
- 2.Rxe5#
- 1...Rg1
- 2.Rc4#
- 1...Rg2
- 2.Rc4#
- 1...Rg3
- 2.Rc4#
- 1...Rf4
- 2.Rc4#
- 1...Rh4
- 2.Rc4#
- 1...Sf6
- 2.Rxe5#
- 1...Sb8
- 2.Rxe5#
- 1...Sf8
- 2.Rxe5#
- 1...Sc5!
- 1...Kf5+
- 1.Rb5?
- 1...Kf5+
- 2.e4#
- 1...Rxg5
- 2.Rc4#
- 1...Sb6
- 2.Rxe5#
- 1...Rg1
- 2.Rc4#
- 1...Rg2
- 2.Rc4#
- 1...Rg3
- 2.Rc4#
- 1...Rf4
- 2.Rc4#
- 1...Rh4
- 2.Rc4#
- 1...Sf6
- 2.Rxe5#
- 1...Sb8
- 2.Rxe5#
- 1...Sf8
- 2.Rxe5#
- 1...Sc5!
- 1...Kf5+
- 1.Qa1?
- 1...Rxg5
- 2.Sxg5#
- 2.Rc4#
- 1...Sc5
- 2.Qxe5#
- 1...Sb6
- 2.Rxe5#
- 2.Qxe5#
- 1...Rg1
- 2.Rc4#
- 1...Rg2
- 2.Rc4#
- 1...Rg3
- 2.Rc4#
- 1...Rf4
- 2.Rc4#
- 1...Rh4
- 2.Rc4#
- 1...Sf6
- 2.Rxe5#
- 2.Qxe5#
- 1...Sb8
- 2.Rxe5#
- 2.Qxe5#
- 1...Sf8
- 2.Rxe5#
- 2.Qxe5#
- 1...Kf5+!
- 1...Rxg5
- 1.Qb1?
- threat
- 2.c3#
- 2.c4#
- 1...Kf5+
- 2.c4#
- 1...Rg1
- 2.Rc4#
- 1...Sc5!
- threat
- 1.Qh1?
- 1...Kf5+
- 2.Sd4#
- 1...Rxg5
- 2.Rc4#
- 1...Sb6
- 2.Rxe5#
- 1...Rg1
- 2.Rc4#
- 1...Rg2
- 2.Rc4#
- 1...Rg3
- 2.Rc4#
- 1...Rf4
- 2.Rc4#
- 1...Rh4
- 2.Rc4#
- 1...Sf6
- 2.Rxe5#
- 1...Sb8
- 2.Rxe5#
- 1...Sf8
- 2.Rxe5#
- 1...Sc5!
- 1...Kf5+
- 1.c3?
- threat
- 2.Qb1#
- 1...Kf5+
- 2.e4#
- 1...Rg1
- 2.Rc4#
- 1...Sc5!
- threat
- 1.Ka3?
- Keys
- 1.Qg3!
- 1...Kf5+
- 2.Qf4#
- 1...Rxg3
- 2.Rc4#
- 1...Rxg5
- 2.Rc4#
- 1...Sc5
- 2.Qxe5#
- 1...Sb6
- 2.Rxe5#
- 2.Qxe5#
- 1...Rf4
- 2.Rc4#
- 1...Rh4
- 2.Rc4#
- 1...Sf6
- 2.Rxe5#
- 2.Qxe5#
- 1...Sb8
- 2.Rxe5#
- 2.Qxe5#
- 1...Sf8
- 2.Rxe5#
- 2.Qxe5#
- 1...Kf5+
- 1.Qg3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 6
- Sets
- K(a);CHECK,OGATE,P_SPINP(c),P_SPINR(b),S_FLIGHT::P(D)
- R(b);::R(J)
- R(b);XP(I)::R(J)
- S(f);N_GUARD::R1(H),XP(c)
- Tries
- Try
- K(G);S_FLIGHT
- Vars
- K(a);OGATE,P_SPINP(c),P_SPINR(b),S_FLIGHT::P(D)
- R(b);XP(I)::R(J)
- R(b);::R(J)
- R(b);P_PINS(E)::R(J)
- S(f);N_GUARD::R1(H),XP(c)
- Refutation
- S(f);
- Try
- K(G);P-FLIGHT
- Vars
- K(a);OGATE,P_SPINP(c),P_SPINR(b),S_FLIGHT::P(D)
- R(b);XP(I)::R(J)
- R(b);::R(J)
- R(b);P_PINS(E)::R(J)
- S(f);N_GUARD::R1(H),XP(c)
- Refutation
- S(f);CHECK
- Try
- K(G);S_FLIGHT
- Vars
- K(a);OGATE,P_SPINP(c),P_SPINR(b),S_FLIGHT::P(D)
- R(b);::R(J)
- R(b);P_PINS(E)::R(J)
- S(f);N_GUARD::R1(H),XP(c)
- Refutation
- S(f);
- Try
- B(C);
- Vars
- K(a);CHECK,OGATE,P_SPINP(c),P_SPINR(b),S_FLIGHT::P(D)
- R(b);XP(I)::R(J)
- S(f);N_GUARD::R1(H),XP(c)
- R(b);::R(J)
- Refutation
- S(f);
- Try
- R(H);
- Vars
- K(a);CHECK,OGATE,P_SPINP(c),P_SPINR(b),S_FLIGHT::P(D)
- R(b);XP(I)::R(J)
- S(f);N_GUARD::R1(H),XP(c)
- R(b);::R(J)
- Refutation
- S(f);
- Try
- Q(A);
- Vars
- S(f);N_GUARD::QAR1(A),XP(c)
- R(b);::R(J)
- Refutation
- K(a);CHECK,P_SPINP(c),P_SPINR(b),S_FLIGHT
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- K(a);CHECK,P_SPINP(c),P_SPINR(b),S_FLIGHT::QAB(A)+P(B)
- R(b);::R(J)
- Refutation
- S(f);
- Try
- Q(A);
- Vars
- K(a);CHECK,P_SPINP(c),P_SPINR(b),S_FLIGHT::S(E)
- R(b);XP(I)::R(J)
- S(f);N_GUARD::R1(H),XP(c)
- R(b);::R(J)
- Refutation
- S(f);
- Try
- P(B);
- Threat
- QAB(A)
- Vars
- K(a);CHECK,OGATE,P_SPINP(c),P_SPINR(b),S_FLIGHT::P(D)
- R(b);::R(J)
- Refutation
- S(f);
- Try
- Actual
- Q(A);
- Vars
- K(a);CHECK,P_SPINP(c),P_SPINR(b),S_FLIGHT::QAR1(A)
- R(b);XQ(A)::R(J)
- R(b);XP(I)::R(J)
- S(f);N_GUARD::QAR1(A),XP(c)
- R(b);::R(J)
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).