MESON Chess Problem Database

Problem Display
PID: 268720 (n1R1Q3/1pb5/qN6/pPkB1N2/r1p5/n1B5/2p3K1/rb6 w - - 0 1)

Boswell, Edward

Sunday Referee, 1930

(First published on Sun Mar 30 1930)

n1R1Q3/1pb5/qN6/pPkB1N2/r1p5/n1B5/2p3K1/rb6

#2

8 + 12

15239 Valois Notebooks 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Kxb6
      • 2.Bd4#
    • 1...Qxb5
      • 2.Qe3#
    • 1...Rb4
      • 2.Bd4#
  • Tries
    • 1.Sd7+?
      • 1...Kxb5
        • 2.Sd4#
      • 1...Kxd5!
    • 1.Be4?
      • threat
        • 2.Sxa4#
      • 1...Kxb6
        • 2.Bd4#
      • 1...Qxb6
        • 2.Qe5#
      • 1...Sxb5
        • 2.Sd7#
      • 1...Sxb6
        • 2.Rxc7#
      • 1...Rb4
        • 2.Bd4#
      • 1...Qxb5!
  • Keys
    • 1.Bf3!
      • threat
        • 2.Sxa4#
      • 1...Kxb6
        • 2.Bd4#
      • 1...Qxb5
        • 2.Qe3#
      • 1...Qxb6
        • 2.Qe5#
      • 1...Sxb5
        • 2.Sd7#
      • 1...Sxb6
        • 2.Rxc7#
      • 1...Rb4
        • 2.Bd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(h);N_GUARD,N_SPINB(k),S_FLIGHT,XS(F)::B(B)
    • Q(i);SBLOCK,XP(C)::QAB(H)
    • R(e);SBLOCK::B(B)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(h);N_GUARD,N_SPINB(k),P-FLIGHT,XP(C)::S(E)
      • Refutation
        • K(h);N_SPINB(k),P-FLIGHT,XB(D)
    • Try
      • B(D);
      • Threat
        • S(F),XR(e)
      • Vars
        • K(h);N_GUARD,N_SPINB(k),S_FLIGHT,XS(F)::B(B)
        • Q(i);SBLOCK,XS(F)::QAR2(H)
        • S(d);SBLOCK,XP(C)::S(F)
        • S(l);N_GUARD,SBLOCK,XS(F)::R(G),XB(k)
        • R(e);SBLOCK::B(B)
      • Refutation
        • Q(i);XP(C)
  • Actual
    • B(D);
    • Threat
      • S(F),XR(e)
    • Vars
      • K(h);N_GUARD,N_SPINB(k),S_FLIGHT,XS(F)::B(B)
      • Q(i);SBLOCK,XP(C)::QAB(H)
      • Q(i);SBLOCK,XS(F)::QAR2(H)
      • S(d);SBLOCK,XP(C)::S(F)
      • S(l);N_GUARD,SBLOCK,XS(F)::R(G),XB(k)
      • R(e);SBLOCK::B(B)
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