MESON Chess Problem Database

Problem Display
PID: 157764 (1B5b/3p1q2/1P4b1/3PQ3/K3pr2/2PPkP2/1N1N3R/8 w - - 0 1)

Petite, Efren

Israel Ring Ty., 1954

1B5b/3p1q2/1P4b1/3PQ3/K3pr2/2PPkP2/1N1N3R/8

#2

11 + 7

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd5
      • 2.Qxf4#
    • 1...Qe6
      • 2.Qxf4#
    • 1...Qe8
      • 2.Qxf4#
    • 1...Qg8
      • 2.Qxf4#
    • 1...Qe7
      • 2.Qxf4#
    • 1...Qg7
      • 2.Qxf4#
    • 1...Qh7
      • 2.Qxf4#
    • 1...Rxf3
      • 2.Sdc4#
    • 1...Rf5
      • 2.Qxe4#
    • 1...Rf6
      • 2.Qd4#
    • 1...Bf5
      • 2.Qxf4#
    • 1...Bf6
      • 2.Qxf4#
  • Keys
    • 1.Qg5!
      • threat
        • 2.Qg1#
      • 1...exd3+
        • 2.Sbc4#
      • 1...exf3+
        • 2.Sdc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 12
  • Sets
    • Q(f);N_GUARD,XP(H)::QAB1(I),XR(c)
    • Q(f);N_GUARD::QAB1(I),XR(c)
    • R(c);SBLOCK,XP(F)::S(B)
    • R(c);N_GUARD,S_CUTB(d)::QAR1(I),XP(b)
    • R(c);S_CUTB(g)::QAB1(I)
    • B(d);S_CUTQ(f)::QAB1(I),XR(c)
    • B(g);S_CUTQ(f)::QAB1(I),XR(c)
  • Actual
    • Q(I);N_PINP(b),P_PINR(c)
    • Threat
      • QAB(I)
    • Vars
      • P(b);CHECK,SBLOCK,XP(E)::S(A)
      • P(b);CHECK,SBLOCK,XP(F)::S(B)
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