MESON Chess Problem Database

Problem Display
PID: 180001 (8/8/8/8/7b/3Qp3/K2P2N1/3k4 w - - 0 1)

Fossum, Andre Ferdinand

All Round Ty., 1958

8/8/8/8/7b/3Qp3/K2P2N1/3k4

#2

4 + 3

17122 Sjakkoppgaver og Studier av Andre Fossum 1975
6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Kb2?
      • threat
        • 2.dxe3#
      • 1...exd2
        • 2.Qf3#
      • 1...Be1
        • 2.Sxe3#
      • 1...e2
        • 2.Qc2#
      • 1...Bf6+!
    • 1.Sxe3+?
      • 1...Kc1
        • 2.Qc2#
        • 2.Qc3#
      • 1...Ke1!
  • Keys
    • 1.Kb1!
      • threat
        • 2.dxe3#
      • 1...exd2
        • 2.Qf3#
      • 1...Be1
        • 2.Sxe3#
      • 1...e2
        • 2.Qc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Threat
        • QAR(D)+P(B),XP(b)
      • Vars
        • P(b);OGATE,P_SPINP(b),SBLOCK,XP(B)::QAB(D)
        • B(c);SBLOCK::S(C),XP(b)
        • P(b);SBLOCK::QAB1(D)
      • Refutation
        • B(c);CHECK
    • Try
      • S(C);CHECK,XP(b)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • K(A);S_FLIGHT
    • Threat
      • QAR(D)+P(B),XP(b)
    • Vars
      • P(b);OGATE,P_SPINP(b),SBLOCK,XP(B)::QAB(D)
      • B(c);SBLOCK::S(C),XP(b)
      • P(b);SBLOCK::QAB1(D)
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