MESON Chess Problem Database

Problem Display
PID: 22925 (8/8/8/8/1p4K1/8/Q4Pk1/R5b1 w - - 0 1)

Labai, Zoltan

Hlas l'udu, 1973

8/8/8/8/1p4K1/8/Q4Pk1/R5b1

#2

4 + 3

3295 Einfuhrung in die Welt des Schachproblem 1984
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bh2
      • 2.f3#
      • 2.f4#
  • Tries
    • 1.Qb1?
      • threat
        • 2.Qxg1#
      • 1...Kh1
        • 2.Qxg1#
      • 1...Kh2
        • 2.Qxg1#
      • 1...Bxf2
        • 2.Qh1#
      • 1...Bh2
        • 2.Qf1#
      • 1...Kxf2!
    • 1.Qd5+?
      • 1...Kxf2
        • 2.Qf3#
        • 2.Qd2#
      • 1...Kh2!
    • 1.Qa8+?
      • 1...Kxf2
        • 2.Qf3#
      • 1...Kh2!
  • Keys
    • 1.Qb3!
      • 1...Kh1
        • 2.Qh3#
      • 1...Kxf2
        • 2.Qf3#
      • 1...Kh2
        • 2.Qh3#
      • 1...Bxf2
        • 2.Qh3#
      • 1...Bh2
        • 2.Qf3#

Anticipated by 79926(1960)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);
      • Threat
        • QAR1(B),XB(a)
      • Vars
        • K(b);P_SPINB(a),S_FLIGHT::QAR1(B),XB(a)
        • K(b);P-FLIGHT::QAB1(B),XB(a)
        • B(a);OGATE,SBLOCK,XP(C)::QAB1(B)
        • B(a);SBLOCK::QAB1(B)
      • Refutation
        • K(b);P-FLIGHT,XP(C)
    • Try
      • Q(B);CHECK
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);P-FLIGHT,XP(C)::QAR1(B)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(b);P_SPINB(a),S_FLIGHT::QAR2(B)
      • K(b);P-FLIGHT,XP(C)::QAR1(B)
      • K(b);P-FLIGHT::QAR1(B)
      • B(a);SBLOCK,XP(C)::QAB1(B)
      • B(a);SBLOCK::QAB1(B)
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