MESON Chess Problem Database

Problem Display
PID: 18986 (1Bb1r1q1/K5p1/1R1Nkp2/1Q1N3R/5pP1/1B1P4/8/8 w - - 0 1)

Daniel, Arthur William

Chess Amateur (The), 1911

1Bb1r1q1/K5p1/1R1Nkp2/1Q1N3R/5pP1/1B1P4/8/8

#2

10 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qf7+
      • 2.Sb7#
    • 1...Qh7
      • 2.Qxe8#
    • 1...Re7+
      • 2.Sc7#
  • Tries
    • 1.Sxf6+?
      • 1...Kxf6
        • 2.Qg5#
      • 1...Ke7!
    • 1.Rh2?
      • threat
        • 2.Re2#
      • 1...Qf7+
        • 2.Sb7#
      • 1...Re7+
        • 2.Sc7#
      • 1...Ke5
        • 2.Sf5#
      • 1...Qh7
        • 2.Qxe8#
      • 1...f3!
    • 1.Re5+?
      • 1...Kxe5
        • 2.Sf5#
      • 1...fxe5!
  • Keys
    • 1.Rh1!
      • threat
        • 2.Re1#
      • 1...Qf7+
        • 2.Sb7#
      • 1...Re7+
        • 2.Sc7#
      • 1...Ke5
        • 2.Sf5#
      • 1...Qh7
        • 2.Qxe8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • Q(g);CHECK,SBLOCK::R(G)+S(H)
    • Q(g);N_GUARD::QAR2(D),XR(f)
    • R(f);CHECK,SBLOCK::B(A)+S(E),DCHECK
  • Tries
    • Try
      • S(E);CHECK,XP(c)
      • Vars
        • K(b);P-FLIGHT,XS(E)::QAB1(D)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • R(F);
      • Threat
        • R(F)
      • Vars
        • Q(g);CHECK,SBLOCK::R(G)+S(H)
        • R(f);CHECK,SBLOCK::B(A)+S(E),DCHECK
        • K(b);P-FLIGHT::B(J)+S(H)
        • Q(g);N_GUARD::QAR2(D),XR(f)
      • Refutation
        • P(a);
    • Try
      • R(F);CHECK
      • Vars
        • K(b);P-FLIGHT,XR(F)::B(J)+S(H)
      • Refutation
        • P(c);XR(F)
  • Actual
    • R(F);
    • Threat
      • R(F)
    • Vars
      • Q(g);CHECK,SBLOCK::R(G)+S(H)
      • R(f);CHECK,SBLOCK::B(A)+S(E),DCHECK
      • K(b);P-FLIGHT::B(J)+S(H)
      • Q(g);N_GUARD::QAR2(D),XR(f)
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