MESON Chess Problem Database

Problem Display
PID: 52185 (b1B5/Pn4B1/3P1r2/1N1k1p2/N7/5K2/4Q3/8 w - - 0 1)

Dawson, Thomas Rayner

Chess Amateur (The), 1908

b1B5/Pn4B1/3P1r2/1N1k1p2/N7/5K2/4Q3/8

#2

8 + 5

15256 TRD Scrapbook 2013

SOLUTION

  • SOUND
  • Sets
    • 1...f4
      • 2.Qe4#
  • Tries
    • 1.Sbc3+?
      • 1...Kd4
        • 2.Bxf6#
      • 1...Kc6
        • 2.Qa6#
      • 1...Kxd6!
    • 1.Sc7+?
      • 1...Kd4
        • 2.Bxf6#
      • 1...Kc6
        • 2.Qa6#
      • 1...Kxd6!
    • 1.Qd3+?
      • 1...Ke5
        • 2.Qxf5#
        • 2.Qd4#
      • 1...Kc6!
    • 1.Qc4+?
      • 1...Ke5
        • 2.Qe6#
        • 2.Qd4#
      • 1...Kxc4!
    • 1.Qa2+?
      • 1...Ke5
        • 2.Qe6#
      • 1...Kc6!
    • 1.Qe6+?
      • 1...Kc6
        • 2.Sd4#
        • 2.Bd7#
      • 1...Rxe6!
  • Keys
    • 1.Qc2!
      • 1...Ke5
        • 2.Qxf5#
      • 1...Rxd6
        • 2.Sc7#
      • 1...Sxd6
        • 2.Qc5#
      • 1...Sc5
        • 2.Qxc5#
      • 1...Re6
        • 2.Sb6#
      • 1...Rg6
        • 2.Sb6#
      • 1...Rh6
        • 2.Sb6#
      • 1...Rf7
        • 2.Sb6#
      • 1...Rf8
        • 2.Sb6#
      • 1...Sa5
        • 2.Qc5#
      • 1...Sd8
        • 2.Qc5#
      • 1...f4
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
    • P(b);N_GUARD::QAB1(A)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(a);P-FLIGHT,P_SPINR(c)::B(G),XR(c)
        • K(a);S_FLIGHT::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT,XP(E)
    • Try
      • S(D);CHECK
      • Vars
        • K(a);P-FLIGHT,P_SPINR(c)::B(G),XR(c)
        • K(a);S_FLIGHT::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT,XP(E)
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);S_FLIGHT,XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT,P_SPINR(c)::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • R(c);XQ(A)
  • Actual
    • Q(A);
    • Vars
      • K(a);P-FLIGHT,P_SPINR(c)::QAR1(A),XP(b)
      • R(c);SBLOCK,XP(E)::S(D)
      • S(d);N_GUARD,XP(E)::QAR1(A)
      • S(d);N_GUARD::QAR1(A),XS(d)
      • R(c);::S(C)
      • S(d);N_GUARD::QAR1(A)
      • P(b);N_GUARD::QAB1(A)
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