MESON Chess Problem Database

Problem Display
PID: 200112 (4B3/8/8/3Q3R/1k6/3n2B1/8/1K6 w - - 0 1)

Lipton, Michael

Comm., Variantim, 1997

4B3/8/8/3Q3R/1k6/3n2B1/8/1K6

#2

5 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.Be1+?
      • 1...Ka3
        • 2.Qa2#
        • 2.Qxd3#
      • 1...Sxe1!
    • 1.Qc4+?
      • 1...Ka3
        • 2.Ra5#
        • 2.Qc3#
        • 2.Qa4#
      • 1...Kxc4!
    • 1.Qd4+?
      • 1...Ka3
        • 2.Qc3#
        • 2.Qa4#
      • 1...Kb3!
    • 1.Qa5+?
      • 1...Kb3
        • 2.Bf7#
      • 1...Kc4!
    • 1.Qb5+?
      • 1...Ka3
        • 2.Qa4#
      • 1...Kc3!
  • Keys
    • 1.Rh3!
      • 1...Ka3
        • 2.Bd6#
      • 1...Kc3
        • 2.Be1#
      • 1...Sc5
        • 2.Be1#
      • 1...Sc1
        • 2.Be1#
        • 2.Bd6#
      • 1...Se1
        • 2.Bxe1#
        • 2.Bd6#
      • 1...Sb2
        • 2.Be1#
        • 2.Bd6#
      • 1...Sf2
        • 2.Bd6#
      • 1...Sf4
        • 2.Be1#
      • 1...Se5
        • 2.Be1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(B);CHECK
      • Refutation
        • S(a);XB(B)
    • Try
      • Q(C);CHECK
      • Refutation
        • K(b);P-FLIGHT,XQ(C)
    • Try
      • Q(C);CHECK
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);P-FLIGHT::B(E)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR1(C)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • R(D);
    • Vars
      • K(b);S_FLIGHT::B(B)
      • S(a);N_GUARD::B(B)
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