MESON Chess Problem Database

Problem Display
PID: 55783 (1b2r3/BB3R2/8/3N1N1p/3Q4/Rq1b1k1p/4p3/2n2rnK w - - 0 1)

Howard, Kenneth Samuel

Skakbladet, 1934

1b2r3/BB3R2/8/3N1N1p/3Q4/Rq1b1k1p/4p3/2n2rnK

#2

8 + 11

5089 The Enjoyment of Chess Problems 1943

SOLUTION

  • SOUND
  • Sets
    • 1...Qd1
      • 2.Sde7#
    • 1...Re5
      • 2.Qf4#
    • 1...Bg3
      • 2.Sh4#
    • 1...Bf4
      • 2.Qxf4#
    • 1...Bxa7
      • 2.Qf4#
  • Tries
    • 1.Sde7+?
      • 1...Qd5
        • 2.Bxd5#
      • 1...Be4
        • 2.Qxe4#
      • 1...Qxb7!
    • 1.Sd6+?
      • 1...Bf5
        • 2.Qf4#
      • 1...Kg3!
    • 1.Sg7+?
      • 1...Kg3
        • 2.Sxh5#
      • 1...Bf4
        • 2.Qxf4#
      • 1...Bf5!
    • 1.Qf2+?
      • 1...Ke4
        • 2.Qe3#
      • 1...Kg4
        • 2.Rg7#
      • 1...Rxf2!
  • Keys
    • 1.Qh4!
      • threat
        • 2.Sd4#
      • 1...Qxd5
        • 2.Sd6#
      • 1...Bxf5
        • 2.Se7#
      • 1...Bf4
        • 2.Qxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • Q(e);N_GUARD,P_SPINB(f)::B(G)+S(D)
    • R(k);S_CUTB(j)::QAR1(C)
    • B(j);SBLOCK::R(H)+S(E),DCHECK
    • B(j);N_GUARD::QAR1(C),XB(j)
    • B(j);N_GUARD,XB(F)::QAR1(C)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • Q(e);N_GUARD,P_SPINB(f),P_SPINQ(e)::B(G),XQ(e)
        • B(f);N_GUARD,P_SPINB(f),P_SPINQ(e)::QAB1(C),XB(f)
      • Refutation
        • Q(e);P_SPINB(f),XB(G)
    • Try
      • S(E);CHECK
      • Vars
        • B(f);P_SPINB(f),P_SPINQ(e)::QAR1(C)
      • Refutation
        • K(g);P-FLIGHT
    • Try
      • S(E);CHECK
      • Vars
        • K(g);P-FLIGHT::S(E),XP(i)
        • B(j);N_GUARD,P_SPINB(j)::QAR1(C),XB(j)
      • Refutation
        • B(f);P_SPINB(f),P_SPINQ(e)
    • Try
      • Q(C);CHECK
      • Vars
        • K(g);S_FLIGHT::QAR1(C)
        • K(g);S_FLIGHT::R(H)
      • Refutation
        • R(b);XQ(C)
  • Actual
    • Q(C);
    • Threat
      • R(H)+S(E),DCHECK
    • Vars
      • Q(e);P_SPINB(f),P_SPINQ(e),XS(D)::R(H)+S(E)
      • B(f);N_GUARD,P_SPINB(f),P_SPINQ(e),XS(E)::B(G)+S(D)
      • B(j);N_GUARD::QAR1(C),XB(j)
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