MESON Chess Problem Database

Problem Display
PID: 92860 (8/7R/7B/7K/8/5Q2/6pk/8 w - - 0 1)

Forsberg, Henry Olof Axel

Tidskrift for Schack, 1934

8/7R/7B/7K/8/5Q2/6pk/8

#2

4 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...g1S
      • 2.Bf4#
    • 1...g1B
      • 2.Bf4#
  • Tries
    • 1.Qf2?
      • 1...Kh3
        • 2.Qh4#
      • 1...Kh1!
  • Keys
    • 1.Kg6!
      • threat
        • 2.Be3#
      • 1...g1Q+
        • 2.Bg5#
      • 1...g1R+
        • 2.Bg5#
      • 1...Kg1
        • 2.Be3#
      • 1...Kh1
        • 2.Be3#
      • 1...g1S
        • 2.Bf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • P(a);SBLOCK::B(C)
  • Tries
    • Try
      • Q(A);P_PINP(a)
      • Vars
        • K(b);N_SPINP(a),P-FLIGHT::QAR1(A)
      • Refutation
        • K(b);N_SPINP(a),P-FLIGHT
  • Actual
    • K(B);S_FLIGHT
    • Threat
      • R(D)+B(C)
    • Vars
      • P(a);CHECK,SBLOCK::R(D)+B(C)
      • K(b);S_FLIGHT::B(C)
      • K(b);P-FLIGHT,P_SPINP(a)::R(D)+B(C)
      • P(a);SBLOCK::R(D)+B(C),DCHECK
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