MESON Chess Problem Database

Problem Display
PID: 148810 (7Q/qN6/1PR1P3/1P1k4/1p2rp2/4p2K/5PB1/8 w - - 0 1)

Dawson, Thomas Rayner

Natal Mercury, 1913

(First published on Sat Oct 4 1913)

7Q/qN6/1PR1P3/1P1k4/1p2rp2/4p2K/5PB1/8

#2

9 + 6

15256 TRD Scrapbook 2013

SOLUTION

  • SOUND
  • Tries
    • 1.Qb8?
      • threat
        • 2.Qd6#
      • 1...Kd4
        • 2.Qd6#
      • 1...Qxb8!
    • 1.Qf8?
      • threat
        • 2.Qc5#
        • 2.Qd6#
      • 1...Kd4
        • 2.Qd6#
      • 1...Qxb6
        • 2.Qd6#
      • 1...Qb8
        • 2.Qc5#
      • 1...Ke5!
  • Keys
    • 1.f3!
      • threat
        • 2.fxe4#
      • 1...Rxe6
        • 2.Rc5#
      • 1...Re5
        • 2.Qd8#
      • 1...Rc4
        • 2.Rd6#
      • 1...Rd4
        • 2.Qh5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(I);
      • Threat
        • QAR1(I)
      • Vars
        • K(e);N_SPINR(c),P-FLIGHT::QAR2(I)
      • Refutation
        • Q(f);XQ(I)
    • Try
      • Q(I);
      • Threat
        • DUALS(2)
      • Vars
        • K(e);N_SPINR(c),P-FLIGHT::QAR2(I)
        • Q(f);XP(E)::QAR1(I)
        • Q(f);::QAR1(I)
      • Refutation
        • K(e);N_SPINR(c),P-FLIGHT
  • Actual
    • P(A);N_PINR(c)
    • Threat
      • P(A),XR(c)
    • Vars
      • R(c);SBLOCK,XP(G)::R1(F)
      • R(c);SBLOCK::QAR(I)
      • R(c);SBLOCK::R1(F)
      • R(c);N_GUARD,SBLOCK::QAR(I)
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