MESON Chess Problem Database

Problem Display
PID: 158213 (8/5N2/4B3/3P4/1p2kp2/7Q/1K3P2/n5B1 w - - 0 1)

Andrews, JT

British Chess Magazine 13. Ty., 1906-1907

8/5N2/4B3/3P4/1p2kp2/7Q/1K3P2/n5B1

#2

7 + 4

5454 Near Snap 2016

SOLUTION

  • SOUND
  • Tries
    • 1.Qb3?
      • threat
        • 2.f3#
      • 1...Kd4
        • 2.f3#
      • 1...f3
        • 2.Qc4#
        • 2.Qe3#
      • 1...Sxb3!
    • 1.Qc3?
      • threat
        • 2.Sg5#
        • 2.Sd6#
        • 2.f3#
      • 1...f3
        • 2.Qe3#
        • 2.Qc4#
      • 1...bxc3+!
  • Keys
    • 1.Qf1!
      • threat
        • 2.f3#
      • 1...Kf3
        • 2.Sg5#
      • 1...Kd4
        • 2.f3#
      • 1...f3
        • 2.Qc4#

This anticipates 16905(1941)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(D);
      • Threat
        • P(C)
      • Vars
        • K(c);P-FLIGHT::B(A)+P(C)
      • Refutation
        • S(a);XQ(D)
    • Try
      • Q(D);
      • Threat
        • DUALS(3)
      • Refutation
        • P(b);CHECK,XQ(D)
  • Actual
    • Q(D);
    • Threat
      • P(C)
    • Vars
      • K(c);S_FLIGHT::S(G)
      • K(c);P-FLIGHT::B(A)+P(C)
      • P(d);SBLOCK::QAR2(D)
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