MESON Chess Problem Database

Problem Display
PID: 226975 (2B5/8/1K6/4N3/4kp2/2Q5/p7/8 w - - 0 1)

Holladay, Edgar Dinwiddie

US Problem Bulletin, 1984

2B5/8/1K6/4N3/4kp2/2Q5/p7/8

#2

4 + 3

5454 Near Snap 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Kc5?
      • threat
        • 2.Qe1#
        • 2.Qd4#
      • 1...f3
        • 2.Qd4#
      • 1...a1B
        • 2.Qe1#
      • 1...a1R
        • 2.Qd4#
      • 1...a1Q!
    • 1.Bf5+?
      • 1...Kd5
        • 2.Qc5#
      • 1...Kxf5!
  • Keys
    • 1.Sg4!
      • threat
        • 2.Sf6#
      • 1...Kd5
        • 2.Qd3#
      • 1...f3
        • 2.Qc4#

Anticipated by 94515(1945), 212400(1968), 39223(1972)

This anticipates 94593(1997), 165118(2008)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • P(c);::QAR1(A)
        • P(a);::QAR(A)
        • P(a);::QAR1(A)
      • Refutation
        • P(a);
    • Try
      • B(D);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR1(A)
      • Refutation
        • K(b);S_FLIGHT,XB(D)
  • Actual
    • S(B);
    • Threat
      • S(B)
    • Vars
      • K(b);S_FLIGHT::QAR2(A)
      • P(c);SBLOCK::QAR2(A)
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