MESON Chess Problem Database

Problem Display
PID: 21246 (3N4/8/1p2P3/1b1k4/1P4Q1/K7/2P4B/6n1 w - - 0 1)

Tolosa y Carreras, Jose

Problemas de Ajedrez, 1917

3N4/8/1p2P3/1b1k4/1P4Q1/K7/2P4B/6n1

#2

7 + 4

5454 Near Snap 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Ba4
      • 2.c4#
    • 1...Bc6
      • 2.c4#
    • 1...Bd7
      • 2.c4#
    • 1...Be8
      • 2.c4#
  • Tries
    • 1.Qd1+?
      • 1...Kc4
        • 2.Qd3#
      • 1...Bd3
        • 2.Qxd3#
      • 1...Ke4!
    • 1.Qf5+?
      • 1...Kc4
        • 2.Qd3#
      • 1...Kd4!
  • Keys
    • 1.Sc6!
      • threat
        • 2.Se7#
      • 1...Kxc6
        • 2.Qe4#
      • 1...Bxc6
        • 2.c4#

Anticipated by 190119(1913)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • B(b);N_GUARD::P(A)
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • K(c);S_FLIGHT::QAB1(E)
        • B(b);N_GUARD,P_SPINB(b)::QAR2(E),XB(b)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(c);S_FLIGHT::QAB1(E)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • S(G);
    • Threat
      • S(G)
    • Vars
      • K(c);S_FLIGHT,XS(G)::QAB(E)
      • B(b);N_GUARD,SBLOCK,XS(G)::P(A)
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