MESON Chess Problem Database

Problem Display
PID: 230330 (2rqR3/2p1np2/2pk1N2/1pr1N1K1/1B2pP2/7Q/8/8 w - - 0 1)

Allen, Frederick B

Southend Times, 1939

(First published on Wed Feb 1 1939)

2rqR3/2p1np2/2pk1N2/1pr1N1K1/1B2pP2/7Q/8/8

#2

7 + 10

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qd7
      • 2.Qxd7#
    • 1...Sd5
      • 2.Sxf7#
    • 1...Sf5
      • 2.Sxf7#
  • Keys
    • 1.Qb3!
      • threat
        • 2.Sxe4#
      • 1...Sd5
        • 2.Sxf7#
      • 1...Sf5
        • 2.Sxf7#
      • 1...Sg6
        • 2.Qd1#
      • 1...Sg8
        • 2.Qd1#
      • 1...e3
        • 2.Se4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • Q(j);N_GUARD::QAR1(A),XQ(j)
    • S(g);N_PINS(D),P_PINS(F)::S(D),XP(h)
  • Actual
    • Q(A);
    • Threat
      • S(F),XP(a)
    • Vars
      • S(g);N_PINS(D),P_PINS(F)::S(D),XP(h)
      • S(g);N_GUARD::QAR(A)
      • P(a);::S(F)
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