MESON Chess Problem Database

Problem Display
PID: 606 (4K3/1N1npQ2/5pN1/3p1p2/3k1n2/4r3/8/1BR3B1 w - - 0 1)

Rice, John Michael

British Chess Magazine, 1962

4K3/1N1npQ2/5pN1/3p1p2/3k1n2/4r3/8/1BR3B1

#2

7 + 8

3174 The Two-move Chess Problem Tradition and Development 1966
3747 FIDE Album (1962-1964) 1968

SOLUTION

  • SOUND
  • Tries
    • 1.Sa5?
      • threat
        • 2.Sb3#
        • 2.Sc6#
      • 1...Sxg6
        • 2.Sc6#
      • 1...Sc5
        • 2.Sc6#
      • 1...Se5
        • 2.Sb3#
      • 1...Sb8
        • 2.Sb3#
      • 1...Sd3!
    • 1.Qxe7?
      • threat
        • 2.Bxe3#
        • 2.Qxe3#
      • 1...Se6
        • 2.Qb4#
      • 1...Se5
        • 2.Qc5#
      • 1...Sg2!
  • Keys
    • 1.Sxe7!
      • 1...Ke5
        • 2.Sc6#
      • 1...Sd3
        • 2.Qxd5#
      • 1...Se2
        • 2.Qxd5#
      • 1...Sg2
        • 2.Qxd5#
      • 1...Sh3
        • 2.Qxd5#
      • 1...Sh5
        • 2.Qxd5#
      • 1...Se6
        • 2.Sc6#
      • 1...Sg6
        • 2.Qxd5#
      • 1...Sc5
        • 2.Qxf6#
      • 1...Se5
        • 2.Sxf5#
      • 1...Sb6
        • 2.Qxf6#
      • 1...Sb8
        • 2.Qxf6#
      • 1...Sf8
        • 2.Qxf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 13
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);
      • Threat
        • DUALS(2)
      • Vars
        • S(c);XS(D)::S(E)
        • S(g);::S(E)
      • Refutation
        • S(c);
    • Try
      • Q(F);P_SPINQ(F),XP(h)
      • Threat
        • DUALS(2)
      • Vars
        • S(c);N_PINQ(F)::QAR2(F)
        • S(g);N_PINQ(F)::QAB1(F)
      • Refutation
        • S(c);
  • Actual
    • S(D);P_SPINS(D),XP(h)
    • Vars
      • K(b);N_PINS(D),N_SPINR(a),S_FLIGHT::S(D)
      • S(c);N_GUARD::QAR1(F),XP(d)
      • S(c);N_PINS(D)::S(D)
      • S(g);N_GUARD::QAB(F),XP(f)
      • S(g);N_PINS(D),SBLOCK::S(D),XP(e)
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