MESON Chess Problem Database

Problem Display
PID: 86675 (8/6p1/2KQPr2/5kP1/2R1NPN1/8/8/6R1 w - - 0 1)

Gross, Izidor

Al Hamishmar, 1950

8/6p1/2KQPr2/5kP1/2R1NPN1/8/8/6R1

#2

9 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rg6
      • 2.Se3#
      • 2.Qe5#
    • 1...g6
      • 2.Se3#
      • 2.Sh6#
      • 2.Qe5#
  • Tries
    • 1.Sc5?
      • threat
        • 2.Qd3#
      • 1...Rxe6
        • 2.Qxe6#
      • 1...Kg6!
    • 1.Sexf6?
      • 1...Kg6
        • 2.Qd3#
      • 1...g6
        • 2.Se3#
        • 2.Sh6#
        • 2.Rc5#
        • 2.Qe5#
        • 2.Qd5#
      • 1...gxf6!
    • 1.Qd5+?
      • 1...Kxf4
        • 2.Sd2#
        • 2.Sef2#
        • 2.Sc3#
        • 2.Sg3#
        • 2.Sc5#
        • 2.Sd6#
        • 2.Sexf6#
      • 1...Kg6!
  • Keys
    • 1.Qd3!
      • threat
        • 2.Sc5#
      • 1...Rxe6+
        • 2.Sd6#
      • 1...Kxf4
        • 2.Qf1#
      • 1...Kxe6
        • 2.Qd7#
      • 1...Kg6
        • 2.Sexf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);
      • Threat
        • QAB(H)
      • Vars
        • R(b);OGATE,P_PINQ(H),XP(I)::QAB1(H),XR(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(C);XR(b)
      • Vars
        • K(a);S_FLIGHT::QAB(H)
      • Refutation
        • P(c);XS(C)
    • Try
      • Q(H);CHECK,P_SPINP(I)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(H);P_SPINP(I)
    • Threat
      • QAB(H)+S(C)
    • Vars
      • R(b);CHECK,SBLOCK,XP(I)::QAB(H)+S(C),DCHECK
      • K(a);OGATEB,P-FLIGHT,XP(D)::QAR(H)
      • K(a);OGATEB,S_FLIGHT,XP(I)::QAB1(H)
      • K(a);S_FLIGHT::QAB(H)+S(C),XR(b)
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