MESON Chess Problem Database

Problem Display
PID: 259516 (8/3N1Q2/1R1pr3/1Npk1b1R/2p3p1/K2np1b1/2B5/8 w - - 0 1)

Langstaff, William A

Western Morning News, 1924

(First published on Sat Oct 18 1924)

8/3N1Q2/1R1pr3/1Npk1b1R/2p3p1/K2np1b1/2B5/8

#2

7 + 10

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qxf5#
    • 1...Sf4
      • 2.Rxf5#
      • 2.Rxd6#
    • 1...Se5
      • 2.Sf6#
      • 2.Rxd6#
  • Tries
    • 1.Rxf5+?
      • 1...Be5
        • 2.Sf6#
      • 1...Se5
        • 2.Sf6#
        • 2.Rxd6#
      • 1...Ke4!
    • 1.Rxd6+?
      • 1...Ke4
        • 2.Qxf5#
      • 1...Bxd6!
    • 1.Qxf5+?
      • 1...Re5
        • 2.Sf6#
        • 2.Rxd6#
      • 1...Se5
        • 2.Be4#
        • 2.Qe4#
      • 1...Be5!
  • Keys
    • 1.Sf8!
      • threat
        • 2.Qxe6#
      • 1...Ke4
        • 2.Qxf5#
      • 1...Ke5
        • 2.Qxf5#
      • 1...Be5
        • 2.Qb7#
      • 1...Sf4
        • 2.Rxf5#
      • 1...Se5
        • 2.Rxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(g);N_SPINB(h),N_SPINR(j),P_SPINS(a),S_CUTB(c),S_CUTR(j),S_FLIGHT::QAB1(G),XB(h)
  • Tries
    • Try
      • R(D);CHECK,XB(h)
      • Vars
        • B(c);P_SPINB(c)::S(F)
      • Refutation
        • K(g);N_SPINR(j),P_SPINS(a),S_FLIGHT
    • Try
      • R(E);CHECK,XP(i)
      • Vars
        • K(g);N_SPINB(h),N_SPINR(j),P_SPINS(a),S_FLIGHT::QAB1(G),XB(h)
      • Refutation
        • B(c);XR(E)
    • Try
      • Q(G);CHECK,N_PINR(j),XB(h)
      • Refutation
        • B(c);P_SPINB(c)
  • Actual
    • S(F);
    • Threat
      • QAB1(G),XR(j)
    • Vars
      • K(g);N_SPINB(h),N_SPINR(j),P_SPINS(a),S_CUTB(c),S_CUTR(j),S_FLIGHT::QAB1(G),XB(h)
      • K(g);N_SPINR(j),P-FLIGHT,S_CUTB(c),S_CUTR(j),S_CUTS(a)::QAR1(G),XB(h)
      • B(c);N_SPINB(h),SBLOCK::QAB(G)
      • S(a);N_GUARD,S_CUTB(c)::R(D),XB(h)
      • S(a);N_SPINB(h),SBLOCK,S_CUTB(c)::R1(E),XP(i)
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