MESON Chess Problem Database

Problem Display
PID: 230331 (8/5n2/1Kp3b1/p7/N2krP2/1Q6/1P4B1/8 w - - 0 1)

Allen, Frederick B

Southend Times, 1939

(First published on Wed Feb 15 1939)

8/5n2/1Kp3b1/p7/N2krP2/1Q6/1P4B1/8

#2

6 + 6

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Re1
      • 2.Qc3#
    • 1...Re2
      • 2.Qc3#
    • 1...Rxf4
      • 2.Qc3#
    • 1...Re5
      • 2.Qc3#
    • 1...Re6
      • 2.Qc3#
    • 1...Re7
      • 2.Qc3#
    • 1...Re8
      • 2.Qc3#
  • Keys
    • 1.Sc5!
      • threat
        • 2.Qd3#
      • 1...Rxf4
        • 2.Qc3#
      • 1...Re3
        • 2.Qa4#
      • 1...Re1
        • 2.Qc3#
      • 1...Re2
        • 2.Qc3#
      • 1...Re5
        • 2.Qc3#
      • 1...Re6
        • 2.Sxe6#
        • 2.Qc3#
      • 1...Re7
        • 2.Qc3#
      • 1...Re8
        • 2.Qc3#
      • 1...Se5
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(b);::QAB1(C)
    • R(b);XP(E)::QAB1(C)
  • Actual
    • S(D);
    • Threat
      • QAR1(C)
    • Vars
      • R(b);XP(E)::QAB1(C)
      • R(b);SBLOCK::QAR(C)
      • R(b);::QAB1(C)
      • S(f);S_CUTR(b)::S(D)
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