MESON Chess Problem Database

Problem Display
PID: 244656 (8/8/p2p4/3k4/5PB1/B2p4/5N2/KQ6 w - - 0 1)

D'Oyly, J

The Field, 1904

(First published on Sat Apr 30 1904)

8/8/p2p4/3k4/5PB1/B2p4/5N2/KQ6

#2

6 + 4

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Qxd3#
    • 1...Kd4
      • 2.Qxd3#
    • 1...d2
      • 2.Qe4#
  • Tries
    • 1.Bf3+?
      • 1...Kc4
        • 2.Qxd3#
        • 2.Qb4#
      • 1...Kd4
        • 2.Qxd3#
      • 1...Ke6!
    • 1.Bc8?
      • 1...Kc4
        • 2.Qxd3#
      • 1...Kd4
        • 2.Qxd3#
      • 1...Kc6
        • 2.Qb7#
      • 1...d2
        • 2.Qe4#
      • 1...a5!
    • 1.Qb3+?
      • 1...Kd4
        • 2.Qxd3#
      • 1...Kc6!
    • 1.Qb5+?
      • 1...Kd4
        • 2.Qxd3#
      • 1...axb5!
  • Keys
    • 1.Bd7!
      • threat
        • 2.Qxd3#
      • 1...Kc4
        • 2.Qxd3#
      • 1...Kd4
        • 2.Qxd3#
      • 1...d2
        • 2.Qd3#
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • K(b);S_FLIGHT::QAB1(B),XP(a)
    • K(b);P-FLIGHT::QAR1(B),XP(a)
    • P(a);OGATE::QAB1(B)
  • Tries
    • Try
      • B(F);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(B),XP(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(F);
      • Vars
        • K(b);S_FLIGHT::QAB1(B),XP(a)
        • K(b);P-FLIGHT::QAR1(B),XP(a)
        • K(b);S_FLIGHT::QAB1(B)
        • P(a);OGATE::QAB1(B)
      • Refutation
        • P(c);
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(B),XP(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(B),XP(a)
      • Refutation
        • P(c);XQ(B)
  • Actual
    • B(F);
    • Threat
      • QAR2(B),XP(a)
    • Vars
      • K(b);S_FLIGHT::QAB1(B),XP(a)
      • K(b);P-FLIGHT::QAR1(B),XP(a)
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