MESON Chess Problem Database

Problem Display
PID: 251307 (3Q2n1/2Ppp1p1/3RnPBp/3Pk1pP/1P2N1P1/5P2/5K2/2BR4 w - - 0 1)

Wicken, L

British Chess Magazine, 1933

3Q2n1/2Ppp1p1/3RnPBp/3Pk1pP/1P2N1P1/5P2/5K2/2BR4

#2

14 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Sf4
      • 2.Bb2#
  • Tries
    • 1.Qxd7?
      • threat
        • 2.Rxe6#
        • 2.Qxe6#
      • 1...Sxc7
        • 2.Qf5#
      • 1...exd6
        • 2.Qxe6#
        • 2.Qxd6#
      • 1...Sf4
        • 2.Bb2#
        • 2.Qf5#
      • 1...Sc5
        • 2.Qf5#
      • 1...Sd8
        • 2.Qf5#
      • 1...Sf8
        • 2.Qf5#
      • 1...Sd4!
    • 1.f4+?
      • 1...Sxf4
        • 2.Bb2#
      • 1...gxf4!
  • Keys
    • 1.Sd2!
      • 1...Kd4
        • 2.Bb2#
      • 1...Kf4
        • 2.Sc4#
      • 1...Kxd6
        • 2.Sc4#
      • 1...Kxf6
        • 2.Bb2#
      • 1...Sxc7
        • 2.Sc4#
      • 1...Sxd8
        • 2.Sc4#
      • 1...Sxf6
        • 2.Sc4#
      • 1...exd6
        • 2.Sc4#
      • 1...exf6
        • 2.Sc4#
      • 1...gxf6
        • 2.Sc4#
      • 1...Sd4
        • 2.Sc4#
      • 1...Sf4
        • 2.Sc4#
      • 1...Sc5
        • 2.Sc4#
      • 1...Sf8
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 13
    • REMOVED MATES = 0
  • Sets
    • S(c);N_GUARD,SBLOCK::B(A)
  • Tries
    • Try
      • Q(N);XP(e)
      • Threat
        • DUALS(2)
      • Vars
        • S(c);OGATE,XP(M)::QAR1(N)
        • S(c);OGATE::QAR1(N)
      • Refutation
        • S(c);
    • Try
      • P(D);CHECK
      • Vars
        • S(c);SBLOCK,XP(D)::B(A)
      • Refutation
        • P(b);XP(D)
  • Actual
    • S(F);
    • Vars
      • K(a);N_GUARD,S_CUTS(c),S_FLIGHT::B(A)
      • K(a);N_GUARD,S_FLIGHT::B(A)+S(F)
      • K(a);N_GUARD,P_SPINP(e),S_FLIGHT,XR(J)::S(F)
      • K(a);N_GUARD,P_SPINP(f),P_SPINS(c),S_FLIGHT,XP(K)::B(A)
      • S(c);XP(M)::S(F)
      • S(c);XQ(N)::S(F)
      • S(h);SBLOCK,XP(K)::S(F)
      • P(f);XR(J)::S(F)
      • P(f);XP(K)::S(F)
      • P(g);SBLOCK,XP(K)::S(F)
      • S(c);::S(F)
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