MESON Chess Problem Database
Problem Display
PID: 17424 (2K5/1pQ5/bR2P3/1p1Nnk1P/1R4pP/1p6/1Br4b/1B5N w - - 0 1)
Mansfield, Comins
1st Prize, Revista Portuguese de Xadrez TT, 1946
#2
11 + 9
| 3550 | Complete Mansfield/II | 1997 |
SOLUTION
- SOUND
- Sets
- 1...Bg1
- 2.Sg3#
- 2.Rf4#
- 1...Bg3
- 2.Sxg3#
- 1...Bf4
- 2.Rxf4#
- 1...Sd3
- 2.Se3#
- 2.Se7#
- 1...Sf3
- 2.Se3#
- 2.Se7#
- 1...Sc4
- 2.Qh7#
- 1...Sc6
- 2.Qf7#
- 1...Sg6
- 2.Se3#
- 1...Sd7
- 2.Se3#
- 2.Se7#
- 1...Sf7
- 2.Se3#
- 2.Se7#
- 1...g3
- 2.Rf4#
- 1...Bg1
- Tries
- 1.Kd8?
- 1...Sf7+
- 2.Qxf7#
- 1...Sc4
- 2.Qh7#
- 1...Bg1
- 2.Sg3#
- 2.Rf4#
- 2.Qxe5#
- 1...Bg3
- 2.Sxg3#
- 1...Bf4
- 2.Rxf4#
- 1...Sd3
- 2.Se3#
- 2.Se7#
- 2.Qf7#
- 2.Qh7#
- 1...Sf3
- 2.Se3#
- 2.Se7#
- 2.Qf7#
- 2.Qh7#
- 1...Sg6
- 2.Se3#
- 2.Qf7#
- 1...Sd7
- 2.Se3#
- 2.Se7#
- 1...g3
- 2.Rf4#
- 2.Qxe5#
- 1...Sc6+!
- 1...Sf7+
- 1.Sf2?
- 1...Sc6
- 2.Qf7#
- 1...Bg1
- 2.Rf4#
- 1...Bf4
- 2.Rxf4#
- 1...Sd3
- 2.Se3#
- 2.Se7#
- 1...Sf3
- 2.Se3#
- 2.Se7#
- 1...Sc4
- 2.Se7#
- 2.Qf7#
- 2.Qh7#
- 1...Sg6
- 2.Se3#
- 1...Sd7
- 2.Se3#
- 2.Se7#
- 1...Sf7
- 2.Se3#
- 2.Se7#
- 1...g3
- 2.Rf4#
- 1...Bg3!
- 1...Sc6
- 1.Bxc2+?
- 1...Sd3
- 2.Se3#
- 2.Se7#
- 2.Bxd3#
- 2.Qf7#
- 2.Qh7#
- 1...bxc2!
- 1...Sd3
- 1.Ba1?
- 1...Sc4
- 2.Qh7#
- 1...Sc6
- 2.Qf7#
- 1...Bg1
- 2.Sg3#
- 2.Rf4#
- 1...Bg3
- 2.Sxg3#
- 1...Bf4
- 2.Rxf4#
- 1...Sd3
- 2.Se3#
- 2.Se7#
- 1...Sf3
- 2.Se3#
- 2.Se7#
- 1...Sg6
- 2.Se3#
- 1...Sd7
- 2.Se3#
- 2.Se7#
- 1...Sf7
- 2.Se3#
- 2.Se7#
- 1...g3
- 2.Rf4#
- 1...b2!
- 1...Sc4
- 1.Bc3?
- 1...Sc4
- 2.Qh7#
- 1...Sc6
- 2.Qf7#
- 1...Bg1
- 2.Sg3#
- 2.Rf4#
- 2.Qxe5#
- 1...Bg3
- 2.Sxg3#
- 1...Bf4
- 2.Rxf4#
- 1...Sd3
- 2.Se3#
- 2.Se7#
- 2.Qf7#
- 2.Qh7#
- 1...Sf3
- 2.Se3#
- 2.Se7#
- 2.Qf7#
- 2.Qh7#
- 1...Sg6
- 2.Se3#
- 2.Qf7#
- 1...Sd7
- 2.Se3#
- 2.Se7#
- 1...Sf7
- 2.Se3#
- 2.Se7#
- 2.Qxf7#
- 1...g3
- 2.Rf4#
- 2.Qxe5#
- 1...b2!
- 1...Sc4
- 1.Bxe5?
- threat
- 2.Se3#
- 2.Se7#
- 1...Bg1
- 2.Sg3#
- 2.Se7#
- 2.Rf4#
- 1...Bf4
- 2.Se7#
- 2.Rxf4#
- 1...Bxe5!
- threat
- 1.Rd6?
- 1...Sc4
- 2.Qh7#
- 1...Bg1
- 2.Sg3#
- 2.Rf4#
- 1...Bg3
- 2.Sxg3#
- 1...Bf4
- 2.Rxf4#
- 1...Sd3
- 2.Se3#
- 2.Se7#
- 1...Sf3
- 2.Se3#
- 2.Se7#
- 1...Sc6
- 2.Se3#
- 2.Qf7#
- 2.Qh7#
- 1...Sg6
- 2.Se3#
- 1...Sd7
- 2.Se3#
- 2.Se7#
- 1...Sf7
- 2.Se3#
- 2.Se7#
- 1...g3
- 2.Rf4#
- 1...b6+!
- 1...Sc4
- 1.Qxc2+?
- 1...Sd3
- 2.Se3#
- 2.Se7#
- 2.Qxd3#
- 1...bxc2!
- 1...Sd3
- 1.e7?
- threat
- 2.Se3#
- 2.Rf6#
- 1...Sc6
- 2.Qd7#
- 1...Bg1
- 2.Sg3#
- 2.Rf4#
- 2.Rf6#
- 1...Bf4
- 2.Rxf4#
- 2.Rf6#
- 1...Sd7
- 2.Se3#
- 1...Sc4!
- threat
- 1.Kd8?
- Keys
- 1.Qc3!
- 1...Sc4
- 2.Qd3#
- 1...Sc6
- 2.Qf6#
- 1...Bg1
- 2.Sg3#
- 2.Rf4#
- 1...Bg3
- 2.Sxg3#
- 1...Bf4
- 2.Rxf4#
- 1...Sd3
- 2.Se3#
- 2.Se7#
- 1...Sf3
- 2.Se3#
- 2.Se7#
- 1...Sg6
- 2.Se3#
- 1...Sd7
- 2.Se3#
- 2.Se7#
- 1...Sf7
- 2.Se3#
- 2.Se7#
- 1...g3
- 2.Rf4#
- 1...Sc4
- 1.Qc3!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 2
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- B(b);N_GUARD::S(B),XB(b)
- B(b);N_GUARD::R1(D),XB(b)
- S(f);N_PINQ(J)::QAB(J)
- S(f);N_PINQ(J)::QAR2(J)
- S(f);::S(F)
- P(d);S_CUTB(b)::R1(D)
- Tries
- Try
- K(K);N_SPINQ(J),P-FLIGHT
- Vars
- S(f);CHECK,N_GUARD::QAR2(J),XS(f)
- S(f);N_GUARD::QAB(J)
- B(b);N_GUARD::S(B),XB(b)
- B(b);N_GUARD::R1(D),XB(b)
- Refutation
- S(f);CHECK
- Try
- S(B);
- Vars
- S(f);N_PINQ(J)::QAR2(J)
- B(b);N_GUARD::R1(D)
- B(b);N_GUARD::R1(D),XB(b)
- S(f);::S(F)
- P(d);S_CUTB(b)::R1(D)
- Refutation
- B(b);
- Try
- B(A);CHECK,N_SPINQ(J),XR(a)
- Refutation
- P(c);XB(A)
- Try
- B(C);
- Vars
- S(f);N_PINQ(J)::QAB(J)
- S(f);N_PINQ(J)::QAR2(J)
- B(b);N_GUARD::S(B),XB(b)
- B(b);N_GUARD::R1(D),XB(b)
- S(f);::S(F)
- P(d);S_CUTB(b)::R1(D)
- Refutation
- P(c);
- Try
- B(C);N_SPINQ(J)
- Vars
- S(f);N_GUARD::QAB(J)
- S(f);N_GUARD::QAR2(J)
- B(b);N_GUARD::S(B),XB(b)
- B(b);N_GUARD::R1(D),XB(b)
- Refutation
- P(c);
- Try
- B(C);XS(f)
- Threat
- DUALS(2)
- Refutation
- B(b);XB(C)
- Try
- R(H);
- Vars
- S(f);N_PINQ(J)::QAB(J)
- B(b);N_GUARD::S(B),XB(b)
- B(b);N_GUARD::R1(D),XB(b)
- S(f);::S(F)
- P(d);S_CUTB(b)::R1(D)
- Refutation
- P(i);CHECK
- Try
- Q(J);CHECK,N_SPINQ(J),XR(a)
- Refutation
- P(c);P_SPINP(c),XQ(J)
- Try
- P(I);
- Threat
- DUALS(2)
- Vars
- S(f);N_PINQ(J)::QAB(J)
- S(f);::S(F)
- Refutation
- S(f);N_PINQ(J)
- Try
- Actual
- Q(J);
- Vars
- S(f);N_PINQ(J)::QAB(J)
- S(f);N_PINQ(J)::QAR1(J)
- B(b);N_GUARD::S(B),XB(b)
- B(b);N_GUARD::R1(D),XB(b)
- S(f);::S(F)
- P(d);S_CUTB(b)::R1(D)
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).