MESON Chess Problem Database

Problem Display
PID: 145307 (5B2/P3n3/3pb1Q1/KNk2r2/5nR1/N4B2/8/1R1r4 w - - 0 1)

Durairaj, T

The Hindu, 1935

5B2/P3n3/3pb1Q1/KNk2r2/5nR1/N4B2/8/1R1r4

#2

9 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rdd5
      • 2.Rc1#
    • 1...Rfd5
      • 2.Qc2#
    • 1...Bd5
      • 2.Qxd6#
    • 1...Sfd5
      • 2.Rc4#
  • Tries
    • 1.Rc1+?
      • 1...Bc4
        • 2.Rxc4#
      • 1...Rxc1!
  • Keys
    • 1.a8Q!
      • threat
        • 2.Qa7#
      • 1...Sc6+
        • 2.Qxc6#
      • 1...Rdd5
        • 2.Rc1#
      • 1...Rfd5
        • 2.Qc2#
      • 1...Bd5
        • 2.Qxd6#
      • 1...Sfd5
        • 2.Rc4#
      • 1...Sed5
        • 2.Bxd6#
      • 1...Sc8
        • 2.Qc6#
      • 1...d5
        • 2.Bxe7#

This is a version

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • R(a);N_GUARD,S_CUTB(f)::R(A)
    • R(d);OGATE::QAR(G)
    • B(f);OGATE::QAB1(G),XP(e)
    • S(b);OGATE::R1(D)
  • Tries
    • Try
      • R(A);CHECK
      • Vars
        • B(f);N_GUARD,P_SPINB(f)::R1(A),XB(f)
      • Refutation
        • R(a);XR(A)
  • Actual
    • P(H);
    • Threat
      • QAB(H)
    • Vars
      • S(g);CHECK,N_GUARD,P_SPINP(e)::QAR1(H),XS(g)
      • R(a);N_GUARD,S_CUTB(f)::R(A)
      • R(d);OGATE::QAR(G)
      • B(f);OGATE::QAB1(G),XP(e)
      • S(b);OGATE::R1(D)
      • S(g);OGATE,P_SPINP(e)::B(I),XP(e)
      • S(g);N_GUARD,P_SPINP(e)::QAR1(H)
      • P(e);OGATEB,P_SPINS(g)::B(I),XS(g)
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