MESON Chess Problem Database

Problem Display
PID: 140199 (3Rn3/Q7/1q1Bb2K/1nb5/1P1kB1Rp/1P5r/3P2r1/2N5 w - - 0 1)

Taale, Cornelius J

Probleemblad, 1975

3Rn3/Q7/1q1Bb2K/1nb5/1P1kB1Rp/1P5r/3P2r1/2N5

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qa5
      • 2.Qxc5#
    • 1...Qxd8
      • 2.Qxc5#
    • 1...Qa6
      • 2.Qxc5#
    • 1...Qxd6
      • 2.Qxc5#
    • 1...Qb7
      • 2.Qxc5#
    • 1...Qb8
      • 2.Qxc5#
    • 1...Rg1
      • 2.Se2#
    • 1...Re2
      • 2.Sxe2#
    • 1...Rgg3
      • 2.Se2#
    • 1...Bxb3
      • 2.Bxg2#
    • 1...Bc4
      • 2.Bxg2#
    • 1...Bf7
      • 2.Bxg2#
    • 1...Bg8
      • 2.Bxg2#
    • 1...Sxd6
      • 2.Qg7#
    • 1...Sg7
      • 2.Qxg7#
  • Tries
    • 1.Qg7+?
      • 1...Sf6
        • 2.Qxf6#
      • 1...Sxg7!
  • Keys
    • 1.Bg3+!
      • 1...Qxd8
        • 2.Qxc5#
      • 1...Qd6
        • 2.Qxc5#
      • 1...Bd6
        • 2.Qxb6#
      • 1...Bd5+
        • 2.Bg6#
      • 1...Bd7+
        • 2.Bc6#
      • 1...Sbd6
        • 2.Qa1#
      • 1...Sed6
        • 2.Qg7#

This is after

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 12
  • Sets
    • Q(g);OGATE,P_SPINB(f)::QAB1(I),XB(f)
    • Q(g);OGATE,P_SPINB(f),XR(J)::QAB1(I),XB(f)
    • Q(g);OGATE,P_SPINB(f),P_SPINQ(g),XB(G)::QAB1(I),XB(f)
    • R(a);N_GUARD::S(A)
    • R(a);N_GUARD::S(A),XR(a)
    • B(h);N_GUARD,P_PINB(G),XP(C)::R(F)+B(E),XR(a)
    • B(h);N_GUARD,P_PINB(G)::R(F)+B(E),XR(a)
    • S(i);N_GUARD,P_SPINS(i),XB(G)::QAB(I)
    • S(i);N_GUARD::QAB(I),XS(i)
  • Tries
    • Try
      • Q(I);CHECK
      • Vars
        • S(i);N_GUARD,P_SPINS(i)::QAB(I),XS(i)
      • Refutation
        • S(i);XQ(I)
  • Actual
    • B(G);CHECK
    • Vars
      • Q(g);OGATE,P_SPINB(f),XR(J)::QAB1(I),XB(f)
      • Q(g);OGATE,P_SPINB(f),P_SPINQ(g)::QAB1(I),XB(f)
      • B(f);P_SPINB(f),P_SPINQ(g),S_CUTB(h),S_CUTB(h),S_CUTS(e),S_CUTS(i)::QAB(I),XQ(g)
      • B(h);CHECK,P_SPINB(h)::R(F)+B(E)
      • S(e);P_SPINS(e)::QAB(I)
      • S(i);P_SPINS(i)::QAB(I)
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