MESON Chess Problem Database

Problem Display
PID: 221591 (1B3Kn1/r1n2p2/1R6/1P2k1N1/2P4p/8/5Q1P/1b6 w - - 0 1)

Prideaux, Henry Maxwell

The Field, 1892

(First published on Sat Jun 4 1892)

1B3Kn1/r1n2p2/1R6/1P2k1N1/2P4p/8/5Q1P/1b6

#2

8 + 7

15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Bxc7#
    • 1...Ra2
      • 2.Bxc7#
    • 1...Ra3
      • 2.Bxc7#
    • 1...Ra4
      • 2.Bxc7#
    • 1...Ra5
      • 2.Bxc7#
    • 1...Ra6
      • 2.Bxc7#
    • 1...Be4
      • 2.Sxf7#
    • 1...Sf6
      • 2.Qxf6#
    • 1...Sh6
      • 2.Qf6#
    • 1...Se7
      • 2.Qf6#
    • 1...f5
      • 2.Re6#
    • 1...f6
      • 2.Re6#
  • Tries
    • 1.Qe3+?
      • 1...Be4
        • 2.Qxe4#
      • 1...Kf5!
  • Keys
    • 1.Rd6!
      • threat
        • 2.Rd5#
      • 1...Se6+
        • 2.Rxe6#
      • 1...Kxd6
        • 2.Qd4#
      • 1...Be4
        • 2.Sxf7#
      • 1...Bf5
        • 2.Qd4#
      • 1...Sd5
        • 2.Rxd5#
        • 2.Re6#
      • 1...Sf6
        • 2.Qxf6#
      • 1...Se7
        • 2.Qf6#
      • 1...f5
        • 2.Re6#
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 9
  • Sets
    • R(d);N_GUARD::B(G),XS(e)
    • B(a);SBLOCK::S(E),XP(f)
    • S(g);N_GUARD::QAB1(A),XS(g)
    • S(g);N_GUARD::QAB1(A)
    • P(f);N_GUARD::R1(F)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::QAR1(A),XB(a)
      • Refutation
        • K(c);N_SPINS(e),P-FLIGHT
  • Actual
    • R(F);N_PINS(e)
    • Threat
      • R1(F)
    • Vars
      • S(e);CHECK::B(G)+R(F),DCHECK,XS(e)
      • K(c);P_SPINS(e),S_FLIGHT,XR(F)::QAR2(A)
      • B(a);SBLOCK::S(E),XP(f)
      • B(a);SBLOCK::QAB1(A)
      • S(g);N_GUARD::QAB1(A),XS(g)
      • S(g);N_GUARD::QAB1(A)
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