MESON Chess Problem Database

Problem Display
PID: 5972 (b2Q3b/r2p4/p1R1Bp2/3NkPN1/2K3pn/1p4P1/8/8 w - - 0 1)

Hartong, Jan

4th Comm., BCPS 001. Ty., 1926

b2Q3b/r2p4/p1R1Bp2/3NkPN1/2K3pn/1p4P1/8/8

#2

8 + 10

56 The Problemist 1927

SOLUTION

  • SOUND
  • Sets
    • 1...d6
      • 2.Qxd6#
  • Tries
    • 1.Qc7+?
      • 1...d6
        • 2.Qxd6#
      • 1...Rxc7!
    • 1.Qe7?
      • threat
        • 2.Bxd7#
        • 2.Qd6#
      • 1...Bxc6
        • 2.Bxd7#
      • 1...fxg5
        • 2.Bxd7#
      • 1...dxc6
        • 2.Bd7#
      • 1...dxe6
        • 2.Qxe6#
      • 1...Sg6
        • 2.Qd6#
      • 1...d6
        • 2.Bd7#
        • 2.Qxd6#
      • 1...Sxf5!
    • 1.Qb8+?
      • 1...d6
        • 2.Qxd6#
      • 1...Rc7!
  • Keys
    • 1.Sc3!
      • threat
        • 2.Sf7#
      • 1...d5+
        • 2.Qxd5#
      • 1...fxg5
        • 2.Qxh8#
      • 1...dxc6
        • 2.Qd4#
      • 1...dxe6
        • 2.Qa5#
      • 1...d6
        • 2.Qxd6#

There are these versions: 191279

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(h);OGATE::QAB1(H),XP(h)
  • Tries
    • Try
      • Q(H);CHECK
      • Vars
        • P(h);P_SPINP(h)::QAB1(H),XP(h)
      • Refutation
        • R(g);P_PINR(F),XQ(H)
    • Try
      • Q(H);
      • Threat
        • DUALS(2)
      • Vars
        • B(i);XR(F)::QAR(H)+B(G),XP(h)
        • P(f);XS(E)::QAR(H)+B(G),XP(h)
        • P(h);XR(F)::QAR(H)+B(G)
        • P(h);OGATE,P_SPINP(h),XB(G)::QAR1(H),XP(h)
        • S(c);::QAB1(H)
      • Refutation
        • S(c);XP(D)
    • Try
      • Q(H);CHECK
      • Vars
        • P(h);P_SPINP(h)::QAB1(H),XP(h)
      • Refutation
        • R(g);P_PINR(F),P_SPINR(g)
  • Actual
    • S(C);
    • Threat
      • S(E)
    • Vars
      • P(h);CHECK,OGATE::QAR1(H),XP(h)
      • P(f);OGATEB,XS(E)::QAB(H),XB(j)
      • P(h);OGATE,XR(F)::QAB1(H)
      • P(h);N_GUARD,XB(G)::QAR(H)
      • P(h);OGATE::QAB1(H),XP(h)
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