MESON Chess Problem Database

Problem Display
PID: 99891 (3B4/4N3/6P1/3K2kr/8/4NR2/3Q4/8 w - - 0 1)

Zoltan, Laszlo

Magyar Sakkelet, 1987

3B4/4N3/6P1/3K2kr/8/4NR2/3Q4/8

#2

7 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kh4+
      • 2.S7f5#
    • 1...Kh6+
      • 2.S3f5#
  • Tries
    • 1.S3f5+?
      • 1...Kg4
        • 2.Rg3#
        • 2.Qf4#
        • 2.Qg2#
      • 1...Kf6!
    • 1.Rf5+?
      • 1...Kh4
        • 2.Qh2#
      • 1...Kh6!
    • 1.Qg2+?
      • 1...Kh4+
        • 2.S7f5#
      • 1...Kh6+!
  • Keys
    • 1.Rg3+!
      • 1...Kf4+
        • 2.S3f5#
      • 1...Kh4+
        • 2.S7f5#
      • 1...Kf6+
        • 2.S7f5#
      • 1...Kh6+
        • 2.S3f5#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);CHECK,S_FLIGHT::B(G)+S(F),DCHECK
    • K(a);CHECK,S_FLIGHT::QAB(A)+S(B),DCHECK
  • Tries
    • Try
      • S(B);CHECK
      • Refutation
        • K(a);P_PINS(B),S_FLIGHT
    • Try
      • R(C);CHECK
      • Vars
        • K(a);P_PINR(C),S_FLIGHT::QAR2(A)
      • Refutation
        • K(a);P_PINR(C),S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);CHECK,S_FLIGHT::B(G)+S(F),DCHECK
      • Refutation
        • K(a);CHECK,S_FLIGHT
  • Actual
    • R(C);CHECK
    • Vars
      • K(a);CHECK,S_FLIGHT::QAB(A)+S(B)
      • K(a);CHECK,S_FLIGHT::B(G)+S(F),DCHECK
      • K(a);CHECK,S_FLIGHT::B(G)+S(F)
      • K(a);CHECK,S_FLIGHT::QAB(A)+S(B),DCHECK
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