MESON Chess Problem Database

Problem Display
PID: 51600 (8/8/1pp4b/5PN1/2k2pbR/3N4/1QP5/2K2B2 w - - 0 1)

Costikyan, Simon

The Guardian, 1969

8/8/1pp4b/5PN1/2k2pbR/3N4/1QP5/2K2B2

#2

8 + 6

SOLUTION

  • SOUND
  • Tries
    • 1.Sb4+?
      • 1...Kc5
        • 2.Se4#
      • 1...Be2!
    • 1.Sxf4+?
      • 1...Kc5
        • 2.Se4#
      • 1...Be2!
    • 1.Sf3?
      • threat
        • 2.Qb3#
      • 1...Kd5
        • 2.Qd4#
      • 1...Bxf3!
    • 1.Qxb6?
      • threat
        • 2.Qc5#
      • 1...Kc3
        • 2.Qc5#
        • 2.Qb4#
      • 1...Kd5
        • 2.Qc5#
      • 1...c5
        • 2.Qxc5#
      • 1...Bf8!
  • Keys
    • 1.Se6!
      • threat
        • 2.Qb3#
      • 1...f3+
        • 2.Sdf4#
      • 1...Kd5
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(a);P-FLIGHT::S(H)
      • Refutation
        • B(c);P_SPINB(c),P_SPINP(b)
    • Try
      • S(E);CHECK,XP(b)
      • Vars
        • K(a);P-FLIGHT::S(H)
      • Refutation
        • B(c);P_SPINB(c)
    • Try
      • S(H);
      • Threat
        • QAB1(C)
      • Vars
        • K(a);S_FLIGHT::QAR1(C)
      • Refutation
        • B(c);P_SPINP(b),XS(H)
    • Try
      • Q(C);XP(d)
      • Threat
        • QAR1(C)
      • Vars
        • K(a);S_FLIGHT::QAR1(C)
        • P(e);::QAR1(C),XP(e)
      • Refutation
        • B(f);
  • Actual
    • S(H);
    • Threat
      • QAB1(C)
    • Vars
      • P(b);CHECK,P_SPINB(c)::B(B)+S(E)
      • K(a);S_FLIGHT::QAR1(C)
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