MESON Chess Problem Database

Problem Display
PID: 245280 (4B3/8/8/5pp1/6Rn/4pk2/Q5NB/K7 w - - 0 1)

Onkoud, Abdelaziz

Pat a Mat, 1992

4B3/8/8/5pp1/6Rn/4pk2/Q5NB/K7

#2

6 + 5

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sxg2
      • 2.Qxg2#
    • 1...fxg4
      • 2.Bc6#
  • Tries
    • 1.Sxh4+?
      • 1...gxh4
        • 2.Rf4#
        • 2.Qg2#
      • 1...Kxg4!
  • Keys
    • 1.Sf4!
      • 1...Ke4
        • 2.Qd5#
      • 1...Kxg4
        • 2.Bh5#
      • 1...fxg4
        • 2.Bc6#
      • 1...gxf4
        • 2.Rxf4#
      • 1...e2
        • 2.Qxe2#
      • 1...Sg2
        • 2.Qxg2#
      • 1...Sg6
        • 2.Qg2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • S(c);OGATE,XS(C)::QAB1(B),XS(c)
    • P(d);SBLOCK,XR(E)::B(F)
  • Tries
    • Try
      • S(C);CHECK,XS(c)
      • Refutation
        • K(b);S_FLIGHT,XR(E)
  • Actual
    • S(C);
    • Vars
      • K(b);S_FLIGHT::QAB1(B)
      • K(b);OGATEB,S_FLIGHT,XR(E)::B(F)
      • P(d);SBLOCK,XR(E)::B(F)
      • P(e);OGATE,XS(C)::R1(E),XP(e)
      • P(a);::QAB1(B),XP(a)
      • S(c);N_GUARD::QAB1(B),XS(c)
      • S(c);N_GUARD::QAB1(B)
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