MESON Chess Problem Database

Problem Display
PID: 142083 (N7/Rp6/3K4/pkp5/p1p5/P1Pp4/1PQ1N3/R7 w - - 0 1)

Pasture, Pascal

Phenix, 1989

N7/Rp6/3K4/pkp5/p1p5/P1Pp4/1PQ1N3/R7

#2

9 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...b6
      • 2.Sc7#
  • Tries
    • 1.Qb3+?
      • 1...axb3
        • 2.a4#
      • 1...cxb3!
    • 1.Qxd3?
      • 1...b6
        • 2.Sc7#
      • 1...cxd3!
    • 1.Qd2?
      • 1...b6
        • 2.Sc7#
      • 1...dxe2!
    • 1.b3?
      • threat
        • 2.bxa4#
      • 1...axb3
        • 2.a4#
      • 1...cxb3
        • 2.c4#
      • 1...dxc2!
  • Keys
    • 1.b4!
      • threat
        • 2.Rxa5#
      • 1...axb4
        • 2.Qxa4#
      • 1...cxb4
        • 2.Sd4#
      • 1...axb4 ep
        • 2.a4#
      • 1...cxb4 ep
        • 2.c4#
      • 1...b6
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(g);SBLOCK::S(I)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • P(b);OGATE,XQ(C)::P(E)
      • Refutation
        • P(c);XQ(C)
    • Try
      • Q(C);P_PINP(c),XP(a)
      • Vars
        • P(g);SBLOCK::S(I)
      • Refutation
        • P(c);N_SPINP(c),XQ(C)
    • Try
      • Q(C);
      • Vars
        • P(g);SBLOCK::S(I)
      • Refutation
        • P(a);XS(D)
    • Try
      • P(B);
      • Threat
        • P(B),XP(b)
      • Vars
        • P(b);OGATE,XP(B)::P(E)
        • P(c);OGATE,XP(B)::P(F)
      • Refutation
        • P(a);XQ(C)
  • Actual
    • P(B);
    • Threat
      • R1(H),XP(d)
    • Vars
      • P(d);XP(B)::QAB1(C),XP(b)
      • P(f);N_GUARD,XP(B)::S(D)
      • P(b);EP,OGATE,XP(B)::P(E)
      • P(c);EP,OGATE,XP(B)::P(F)
      • P(g);SBLOCK::S(I)
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