MESON Chess Problem Database

Problem Display
PID: 32424 (1b6/p7/2n1N3/8/3BQPp1/p2pN1P1/2qPk1P1/Rn1R2K1 w - - 0 1)

Christoforatos, G

De Problemist, 1928

1b6/p7/2n1N3/8/3BQPp1/p2pN1P1/2qPk1P1/Rn1R2K1

#2

11 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd1+
      • 2.Sf1#
    • 1...Bxf4
      • 2.Sxf4#
    • 1...Sxd2
      • 2.Re1#
    • 1...Sxd4
      • 2.Sxd4#
  • Tries
    • 1.Re1+?
      • 1...Kxd2
        • 2.Sf1#
      • 1...Kxe1!
  • Keys
    • 1.f5!
      • threat
        • 2.Qxg4#
      • 1...Qxd1+
        • 2.Sf1#
      • 1...Sxd2
        • 2.Re1#
      • 1...Sxd4
        • 2.Sxd4#
      • 1...Bf4
        • 2.Sxf4#
      • 1...Se5
        • 2.Sf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • Q(b);CHECK,SBLOCK,XR(B)::QAR(I)+S(F)
    • B(i);XP(J)::S(K),XB(i)
    • S(a);SBLOCK,XP(D)::R1(B)
    • S(g);XB(H)::S(K),XS(g)
  • Tries
    • Try
      • R(B);CHECK
      • Vars
        • K(c);P-FLIGHT,XP(D)::S(F)
      • Refutation
        • K(c);P-FLIGHT,P_SPINS(a),XR(B)
  • Actual
    • P(J);
    • Threat
      • QAB(I),XP(f)
    • Vars
      • Q(b);CHECK,SBLOCK,XR(B)::QAR(I)+S(F)
      • S(a);SBLOCK,XP(D)::R1(B)
      • S(g);XB(H)::S(K),XS(g)
      • B(i);N_GUARD::S(K),XB(i)
      • S(g);S_CUTB(i)::S(K)
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