MESON Chess Problem Database
Problem Display
PID: 11437 (2rb4/1B1Q3N/r1n3p1/p2np3/2Rpk1P1/3bP3/5R2/2KN4 w - - 0 1)
Mansfield, Comins
Tijdschrift vd KNSB, 1938
#2
9 + 11
| 3550 | Complete Mansfield/II | 1997 |
SOLUTION
- SOUND
- Sets
- 1...Bg5
- 2.Sxg5#
- 1...Bb6
- 2.Sg5#
- 1...Bc7
- 2.Sg5#
- 1...Sxe3
- 2.Sc3#
- 1...Sf6
- 2.Sg5#
- 1...Sde7
- 2.Sg5#
- 2.Sf6#
- 1...Sa7
- 2.Bxd5#
- 2.Qxd5#
- 1...Sce7
- 2.Sg5#
- 1...Sb8
- 2.Bxd5#
- 2.Qxd5#
- 1...g5
- 2.Qf5#
- 1...Bg5
- Tries
- 1.Qe6?
- threat
- 2.Qxg6#
- 1...Sxe3
- 2.Sc3#
- 1...Sc3
- 2.Rf4#
- 2.Rxd4#
- 1...Sdb4
- 2.Rf4#
- 2.Rxd4#
- 1...Sf4
- 2.Rxf4#
- 2.Rxd4#
- 1...Sb6
- 2.Rf4#
- 2.Rxd4#
- 1...Sf6
- 2.Sg5#
- 2.Rf4#
- 2.Rxd4#
- 1...Sc7
- 2.Rf4#
- 2.Rxd4#
- 1...Sde7
- 2.Sg5#
- 2.Sf6#
- 2.Rf4#
- 2.Rxd4#
- 1...Scb4
- 2.Rf4#
- 1...Sa7
- 2.Bxd5#
- 2.Rf4#
- 2.Qxd5#
- 1...Sce7
- 2.Sg5#
- 2.Sf6#
- 2.Rf4#
- 1...Sb8
- 2.Bxd5#
- 2.Rf4#
- 2.Qxd5#
- 1...g5
- 2.Qf5#
- 2.Qg6#
- 1...Bf6!
- threat
- 1.Qf7?
- threat
- 2.Qxg6#
- 2.Qf3#
- 1...Bxc4
- 2.Qxg6#
- 1...Sxe3
- 2.Sc3#
- 2.Qf3#
- 1...Bb1
- 2.Qxg6#
- 1...Bf1
- 2.Qxg6#
- 1...Bc2
- 2.Qxg6#
- 1...Be2
- 2.Qxg6#
- 1...Bf6
- 2.Qxg6#
- 1...Sc3
- 2.Qf3#
- 1...Sdb4
- 2.Qf3#
- 1...Sb6
- 2.Qf3#
- 1...Sf6
- 2.Sg5#
- 1...Sc7
- 2.Qf3#
- 1...Sde7
- 2.Sg5#
- 2.Sf6#
- 2.Qf3#
- 1...Scb4
- 2.Qf3#
- 1...Sa7
- 2.Bxd5#
- 2.Qxd5#
- 2.Qf3#
- 1...Sce7
- 2.Sg5#
- 2.Qf3#
- 1...Sb8
- 2.Bxd5#
- 2.Qxd5#
- 2.Qf3#
- 1...g5
- 2.Qg6#
- 2.Qf3#
- 2.Qf5#
- 1...Sf4!
- threat
- 1.Qe6?
- Keys
- 1.Qe8!
- threat
- 2.Qxg6#
- 1...Sxe3
- 2.Sc3#
- 1...Sc3
- 2.Rxd4#
- 1...Sdb4
- 2.Rxd4#
- 1...Sf4
- 2.Rxd4#
- 1...Sb6
- 2.Rxd4#
- 1...Sf6
- 2.Rxd4#
- 1...Sc7
- 2.Rxd4#
- 1...Sde7
- 2.Sf6#
- 1...Scb4
- 2.Rf4#
- 1...Sa7
- 2.Rf4#
- 1...Sce7
- 2.Sg5#
- 1...Sb8
- 2.Rf4#
- 1...g5
- 2.Qg6#
- threat
- 1.Qe8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 9
- REMOVED MATES = 3
- Sets
- B(k);N_GUARD,P_PINP(D)::S(I),XB(k)
- B(k);N_GUARD::S(I)
- S(e);N_GUARD,P_SPINS(h),SBLOCK,XP(D)::S(B)
- S(e);P_SPINS(h),S_CUTB(k)::S(I)
- S(h);P_PINR(E),P_SPINS(e),S_CUTB(k)::S(I)
- P(i);N_GUARD::QAB1(H)
- Tries
- Try
- Q(H);
- Threat
- QAB(H),XP(i)
- Vars
- S(e);N_GUARD,P_SPINS(h),SBLOCK,XP(D)::S(B)
- S(h);P_PINR(E),P_SPINS(e)::R1(C)
- Refutation
- B(k);
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- B(a);N_SPINP(b),XR(E)::QAB(H),XP(i)
- B(a);::QAB(H),XP(i)
- B(k);::QAB(H),XP(i)
- S(e);P_SPINS(h)::QAB1(H)
- S(e);P_SPINS(h),S_CUTB(k)::S(I)
- S(h);P_PINR(E),P_SPINS(e)::QAB1(H)
- Refutation
- S(e);P_SPINS(h)
- Try
- Actual
- Q(H);
- Threat
- QAB(H),XP(i)
- Vars
- S(e);N_GUARD,P_SPINS(h),SBLOCK,XP(D)::S(B)
- S(e);P_SPINS(h)::R1(E),XP(b)
- S(e);N_GUARD,P_SPINS(h),S_CUTB(k)::S(I)
- S(h);P_PINR(E),P_SPINS(e)::R1(C)
- S(h);P_PINR(E),P_SPINS(e),S_CUTB(k)::S(I)
- P(i);::QAB(H)
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).