MESON Chess Problem Database

Problem Display
PID: 11181 (7B/b7/2ppQ1K1/4p3/n3kNBR/1p1Np1n1/8/1b6 w - - 0 1)

Dobbs, Gilbert S

Chess, 1937

7B/b7/2ppQ1K1/4p3/n3kNBR/1p1Np1n1/8/1b6

#2

7 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Bb8
      • 2.Qc4#
    • 1...Sc5
      • 2.Qc4#
    • 1...c5
      • 2.Qc4#
      • 2.Qd5#
    • 1...d5
      • 2.Qxe5#
  • Tries
    • 1.Qxd6?
      • threat
        • 2.Qxe5#
      • 1...Bd4
        • 2.Qxc6#
      • 1...Bb8
        • 2.Qb4#
      • 1...exf4!
  • Keys
    • 1.Sxe5!
      • threat
        • 2.Sed3#
      • 1...Kd4+
        • 2.Sed3#
      • 1...Kxf4+
        • 2.Bf5#
      • 1...dxe5
        • 2.Qxe5#
      • 1...Bd3
        • 2.Sexd3#
      • 1...Bd4
        • 2.Bf3#
      • 1...Sc5
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • B(j);N_GUARD::QAR2(E)
    • S(e);S_CUTB(j)::QAR2(E)
    • P(i);N_GUARD::QAR1(E),XP(g)
  • Tries
    • Try
      • Q(E);N_PINP(g),XP(i)
      • Threat
        • QAR1(E),XP(g)
      • Vars
        • B(j);SBLOCK::QAB(E),XP(h)
        • B(j);N_GUARD::QAR(E)
      • Refutation
        • P(g);XS(B)
  • Actual
    • S(A);XP(g)
    • Threat
      • QAR(E)+S(A)
    • Vars
      • K(f);CHECK,P-FLIGHT::B(G)+S(A)
      • K(f);CHECK,P-FLIGHT,XS(B)::R(D)+B(C)
      • P(i);OGATE,P_SPINP(i),XS(A)::QAR1(E),XP(i)
      • B(a);::QAR(E)+S(A),XB(a)
      • B(j);SBLOCK::B(C)
      • S(e);S_CUTB(j)::QAR2(E)
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Developed and maintained by Brian Stephenson.
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