MESON Chess Problem Database

Problem Display
PID: 185713 (7K/6Q1/3pp1N1/1N6/2prk3/4pR2/3p3B/b6B w - - 0 1)

Gaspar, Byron

Chess, 1957

7K/6Q1/3pp1N1/1N6/2prk3/4pR2/3p3B/b6B

#2

7 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Rf5#
    • 1...Rd3
      • 2.Rf1#
      • 2.Rf2#
      • 2.Rf4#
      • 2.Rf6#
      • 2.Rf7#
      • 2.Rf8#
    • 1...c3
      • 2.Qxd4#
  • Tries
    • 1.Rxe3+?
      • 1...Kf5
        • 2.Se7#
      • 1...Kxe3!
    • 1.Rg3+?
      • 1...Kf5
        • 2.Qf8#
        • 2.Qf7#
      • 1...Kd3!
    • 1.Rh3+?
      • 1...Kf5
        • 2.Se7#
      • 1...Kd3!
    • 1.Rf5+?
      • 1...Kxf5
        • 2.Se7#
      • 1...Kd3!
  • Keys
    • 1.Qh7!
      • threat
        • 2.Se7#
      • 1...Rd3+
        • 2.Rf6#
      • 1...Rd5+
        • 2.Se5#
      • 1...Kd3
        • 2.Sf4#
      • 1...Kd5
        • 2.Rf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • K(f);S_FLIGHT::B(A)+R(C),DCHECK
    • P(d);S_CUTB(a)::QAR1(F),XR(e)
  • Tries
    • Try
      • R(C);CHECK,XP(c)
      • Vars
        • K(f);S_FLIGHT::S(E)
      • Refutation
        • K(f);P-FLIGHT,XR(C)
    • Try
      • R(C);CHECK
      • Refutation
        • K(f);P_SPINP(c),S_FLIGHT
    • Try
      • R(C);CHECK
      • Vars
        • K(f);S_FLIGHT::S(E)
      • Refutation
        • K(f);P_SPINP(c),S_FLIGHT
    • Try
      • R(C);CHECK
      • Vars
        • K(f);S_FLIGHT,XR(C)::S(E)
      • Refutation
        • K(f);S_FLIGHT
  • Actual
    • Q(F);
    • Threat
      • QAB(F)+S(E)
    • Vars
      • R(e);CHECK,SBLOCK::B(A)+R(C)
      • R(e);CHECK,SBLOCK::QAB(F)+S(E)
      • K(f);P_SPINP(c),S_FLIGHT::QAB(F)+S(E),DCHECK
      • K(f);S_FLIGHT::B(A)+R(C),DCHECK
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