MESON Chess Problem Database

Problem Display
PID: 141366 (1rB3Qq/b2N4/1Nn3PB/2P1p2r/4kp1n/2P2R2/2P2K2/8 w - - 0 1)

Bowell, Gerald P

British Chess Magazine, 1936

1rB3Qq/b2N4/1Nn3PB/2P1p2r/4kp1n/2P2R2/2P2K2/8

#2

11 + 9

14868 Pirnie Collection 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Qf6
      • 2.Sxf6#
    • 1...Qxh6
      • 2.Sf6#
    • 1...Qh7
      • 2.Sf6#
    • 1...Qxg8
      • 2.Sf6#
    • 1...Rf5
      • 2.Qd5#
    • 1...Sf5
      • 2.Qd5#
  • Tries
    • 1.Sc4?
      • threat
        • 2.Sd6#
      • 1...Bxc5+
        • 2.Sxc5#
      • 1...Qxg8
        • 2.Sf6#
      • 1...Qf6
        • 2.Sxf6#
      • 1...Sf5
        • 2.Sd2#
      • 1...Kf5!
    • 1.Qc4+?
      • 1...Sd4
        • 2.Qd3#
      • 1...Kf5!
  • Keys
    • 1.Sf6+!
      • 1...Qxf6
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 5
  • Sets
    • Q(i);N_GUARD::S(I),XQ(i)
    • Q(i);N_GUARD,XB(H)::S(I)
    • Q(i);N_GUARD::S(I)
    • Q(i);N_GUARD,XQ(K)::S(I)
    • R(e);SBLOCK::QAB1(K)
    • S(c);SBLOCK::QAB1(K)
  • Tries
    • Try
      • S(F);P_SPINP(E)
      • Threat
        • S(F)
      • Vars
        • B(g);CHECK,XP(E)::S(I),XB(g)
        • Q(i);N_GUARD,XQ(K)::S(I)
        • Q(i);N_GUARD::S(I),XQ(i)
        • S(c);SBLOCK::S(F)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
    • Try
      • Q(K);CHECK
      • Vars
        • S(f);P_SPINS(f)::QAB1(K)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
  • Actual
    • S(I);CHECK
    • Vars
      • Q(i);XS(I)::QAB1(K)
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Developed and maintained by Brian Stephenson.
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