MESON Chess Problem Database

Problem Display
PID: 138781 (8/8/7Q/5p2/6k1/R7/8/4bK1N w - - 0 1)

McDowell, Michael

1st HM., StrateGems 01. Miniature Ty., 2010

8/8/7Q/5p2/6k1/R7/8/4bK1N

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Bd2
      • 2.Sf2#
      • 2.Rg3#
    • 1...Bf2
      • 2.Sxf2#
    • 1...Bg3
      • 2.Rxg3#
    • 1...Bb4
      • 2.Sf2#
      • 2.Rg3#
    • 1...Ba5
      • 2.Sf2#
      • 2.Rg3#
  • Tries
    • 1.Ra4+?
      • 1...Kf3
        • 2.Qf4#
      • 1...f4
        • 2.Rxf4#
      • 1...Bb4!
  • Keys
    • 1.Rh3!
      • 1...Bg3
        • 2.Rxg3#
      • 1...Bh4
        • 2.Qxh4#
      • 1...f4
        • 2.Qh5#
      • 1...Bd2
        • 2.Sf2#
        • 2.Rg3#
        • 2.Qh4#
      • 1...Bf2
        • 2.Sxf2#
      • 1...Bc3
        • 2.Sf2#
        • 2.Rg3#
        • 2.Qh4#
      • 1...Bb4
        • 2.Sf2#
        • 2.Rg3#
        • 2.Qh4#
      • 1...Ba5
        • 2.Sf2#
        • 2.Rg3#
        • 2.Qh4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(a);N_GUARD::S(B),XB(a)
    • B(a);N_GUARD::R1(C),XB(a)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR1(D)
        • P(c);P_SPINP(c)::R1(C),XP(c)
      • Refutation
        • B(a);P_SPINB(a)
  • Actual
    • R(C);
    • Vars
      • B(a);N_GUARD::R1(C),XB(a)
      • B(a);N_GUARD::QAR1(D),XB(a)
      • P(c);SBLOCK::QAB1(D)
      • B(a);N_GUARD::S(B),XB(a)
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