MESON Chess Problem Database

Problem Display
PID: 16961 (1Q6/1PNN2nn/PPkq1r1R/4b3/Kp6/3p1R2/6B1/8 w - - 0 1)

Mansfield, Comins

The Chess Bulletin, 1944

1Q6/1PNN2nn/PPkq1r1R/4b3/Kp6/3p1R2/6B1/8

#2

10 + 8

3530 Het Half Pin Thema (II) 0000
3550 Complete Mansfield/II 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc7
      • 2.Rxd3#
    • 1...Qe7
      • 2.Rxd3#
    • 1...Qf8
      • 2.Rxd3#
    • 1...Rf7
      • 2.Rxf7#
    • 1...Rf8
      • 2.Rf7#
  • Keys
    • 1.Qf8!
      • threat
        • 2.b8S#
      • 1...Kxd7
        • 2.b8S#
      • 1...Qxc7
        • 2.Rxd3#
      • 1...Qxf8
        • 2.Rxd3#
      • 1...Qxd7
        • 2.Rfxf6#
      • 1...Rxf8
        • 2.Rf7#
      • 1...Qe7
        • 2.Rxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • Q(e);N_GUARD,P_SPINR(f),XS(H)::B(A)+R(B),XP(a)
    • Q(e);N_GUARD,P_SPINR(f)::B(A)+R(B),XP(a)
    • R(f);OGATE,P_SPINQ(e)::B(A)+R(B),XR(f)
    • R(f);OGATE,P_SPINQ(e)::B(A)+R(B)
  • Actual
    • Q(J);
    • Threat
      • P=S
    • Vars
      • K(d);S_FLIGHT,XS(I)::P=S
      • Q(e);N_GUARD,P_SPINR(f),XS(H)::B(A)+R(B),XP(a)
      • Q(e);N_GUARD,P_SPINR(f),XQ(J)::B(A)+R(B),XP(a)
      • Q(e);P_SPINR(f),SBLOCK,XS(I)::B(A)+R(B),DCHECK,XR(f)
      • R(f);OGATE,P_SPINQ(e),XQ(J)::B(A)+R(B)
      • Q(e);N_GUARD,P_SPINR(f)::B(A)+R(B),XP(a)
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