MESON Chess Problem Database

Problem Display
PID: 244654 (1B4K1/5p1Q/N7/3k4/n3R2p/1Pp2n2/4N3/7b w - - 0 1)

Prideaux, Henry Maxwell

The Field, 1904

(First published on Sat Mar 19 1904)

1B4K1/5p1Q/N7/3k4/n3R2p/1Pp2n2/4N3/7b

#2

7 + 7

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sc5
      • 2.Sb4#
    • 1...f5
      • 2.Qb7#
    • 1...f6
      • 2.Qb7#
  • Tries
    • 1.Rc4?
      • threat
        • 2.Sf4#
        • 2.Qe4#
        • 2.Qxf7#
      • 1...Ke6
        • 2.Qxf7#
      • 1...Se1
        • 2.Sf4#
        • 2.Qf5#
        • 2.Qxf7#
      • 1...Sg1
        • 2.Sf4#
        • 2.Qf5#
        • 2.Qxf7#
      • 1...Sd2
        • 2.Sf4#
        • 2.Qf5#
        • 2.Qxf7#
      • 1...Sh2
        • 2.Sf4#
        • 2.Qf5#
        • 2.Qxf7#
      • 1...Sd4
        • 2.Sf4#
      • 1...Se5
        • 2.Sf4#
      • 1...Sg5
        • 2.Sf4#
        • 2.Qf5#
      • 1...f5
        • 2.Sf4#
        • 2.Qd7#
        • 2.Qf7#
      • 1...f6
        • 2.Sf4#
        • 2.Qe4#
        • 2.Qd7#
        • 2.Qf7#
      • 1...Sc5!
  • Keys
    • 1.Re6!
      • threat
        • 2.Qe4#
      • 1...Kxe6
        • 2.Qxf7#
      • 1...fxe6
        • 2.Qb7#
      • 1...Se1
        • 2.Qf5#
      • 1...Sg1
        • 2.Qf5#
      • 1...Sd2
        • 2.Qf5#
      • 1...Sh2
        • 2.Qf5#
      • 1...Sd4
        • 2.Sf4#
      • 1...Se5
        • 2.Rd6#
      • 1...Sg5
        • 2.Qf5#
      • 1...Sc5
        • 2.Sc7#
      • 1...f5
        • 2.Qd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 9
    • REMOVED MATES = 1
  • Sets
    • S(d);SBLOCK::S(D)
    • P(g);OGATE::QAB(E)
  • Tries
    • Try
      • R(C);
      • Threat
        • DUALS(3)
      • Vars
        • K(f);S_FLIGHT::QAB1(E),XP(g)
        • S(c);::S(A)
      • Refutation
        • S(d);
  • Actual
    • R(C);
    • Threat
      • QAB1(E)
    • Vars
      • K(f);OGATEB,S_FLIGHT,XR(C)::QAB1(E),XP(g)
      • P(g);OGATE,SBLOCK,XR(C)::QAB(E)
      • S(c);N_GUARD::QAR2(E)
      • S(c);SBLOCK::S(A)
      • S(c);SBLOCK::R1(C)
      • S(d);SBLOCK::S(D)
      • P(g);OGATE::QAR2(E)
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