MESON Chess Problem Database

Problem Display
PID: 208191 (4Q3/2p2p2/5P2/4p3/1P2k1P1/4P3/4P3/4K3 w - - 0 1)

Thornton, George Howard

Dubuque Chess Journal, 1875

4Q3/2p2p2/5P2/4p3/1P2k1P1/4P3/4P3/4K3

#2

7 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe3
      • 2.Qxe5#
  • Tries
    • 1.Kd2?
      • threat
        • 2.Qc6#
      • 1...c6
        • 2.Qxc6#
      • 1...Kd5!
    • 1.Kf2?
      • threat
        • 2.Qc6#
      • 1...c6
        • 2.Qxc6#
      • 1...Kd5!
  • Keys
    • 1.Qb5!
      • threat
        • 2.Qd3#
      • 1...Kxe3
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT,XP(C)::QAR2(G),XP(b)
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Threat
        • QAB(G)
      • Vars
        • P(c);::QAB(G),XP(c)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT
    • Try
      • K(A);S_FLIGHT
      • Threat
        • QAB(G)
      • Vars
        • P(c);::QAB(G),XP(c)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT
  • Actual
    • Q(G);N_PINP(b)
    • Threat
      • QAB1(G)
    • Vars
      • K(a);P-FLIGHT,XP(C)::QAR2(G),XP(b)
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