MESON Chess Problem Database

Problem Display
PID: 103452 (3B4/5B2/8/8/3kp3/7Q/5P2/4K3 w - - 0 1)

Anthony, Edwyn

Ottawa Citizen, 1888

3B4/5B2/8/8/3kp3/7Q/5P2/4K3

#2

5 + 2

5454 Near Snap 2009
6490 yacpdb 2009
15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...e3
      • 2.Qxe3#
  • Tries
    • 1.Bc7?
      • threat
        • 2.Qe3#
      • 1...e3
        • 2.Qxe3#
      • 1...Kc5!
    • 1.Be7?
      • 1...e3
        • 2.Qxe3#
      • 1...Ke5!
    • 1.Qe6?
      • 1...Kd3
        • 2.Qc4#
      • 1...Kc5
        • 2.Qb6#
      • 1...e3
        • 2.Qxe3#
      • 1...Kc3!
    • 1.Qa3?
      • threat
        • 2.Bf6#
      • 1...e3
        • 2.Qxe3#
      • 1...Ke5!
    • 1.Qb3?
      • 1...Kc5
        • 2.Qb6#
      • 1...e3
        • 2.Qxe3#
      • 1...Ke5!
    • 1.Qg3?
      • threat
        • 2.Bb6#
      • 1...e3
        • 2.Qxe3#
      • 1...Kc5!
  • Keys
    • 1.Qh6!
      • 1...Kc3
        • 2.Qd2#
      • 1...Kd3
        • 2.Qd2#
      • 1...Kc5
        • 2.Qb6#
      • 1...Ke5
        • 2.Qf6#
      • 1...e3
        • 2.Qxe3#

This anticipates 121467(1912), 106765(1955), 105390(1991)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(b);::QAB1(C),XP(b)
  • Tries
    • Try
      • B(E);
      • Threat
        • QAB1(C)
      • Vars
        • P(b);::QAB1(C),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(E);
      • Vars
        • P(b);::QAB1(C),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(a);P-FLIGHT::QAB1(C)
        • K(a);S_FLIGHT::QAB1(C)
        • P(b);OGATE::QAB1(C),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);
      • Threat
        • B(E)
      • Vars
        • P(b);::QAB1(C),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(a);S_FLIGHT::QAB1(C)
        • P(b);::QAB1(C),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);
      • Threat
        • B(E)
      • Vars
        • P(b);::QAB1(C),XP(b)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(C);
    • Vars
      • K(a);S_FLIGHT::QAB1(C)
      • K(a);P-FLIGHT::QAR1(C)
      • P(b);::QAB1(C),XP(b)
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