MESON Chess Problem Database

Problem Display
PID: 194454 (8/3B4/K2R2pq/8/RB3k1p/4b3/4Q3/8 w - - 0 1)

Helweg, Steffen ('Cyrano')

Chess Tattoo in 2, 1976

8/3B4/K2R2pq/8/RB3k1p/4b3/4Q3/8

#2

6 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Bc3#
    • 1...Kg5
      • 2.Qg4#
  • Tries
    • 1.Qf3+?
      • 1...Ke5
        • 2.Rd5#
      • 1...Kg5
        • 2.Rd5#
        • 2.Qg4#
      • 1...Kxf3!
  • Keys
    • 1.Rd3!
      • threat
        • 2.Qxe3#
      • 1...g5+
        • 2.Bd6#
      • 1...Kg3
        • 2.Be1#
      • 1...Ke4
        • 2.Bc3#
        • 2.Bd6#
      • 1...Ke5
        • 2.Bc3#
      • 1...Kg5
        • 2.Be7#
      • 1...Bd4
        • 2.Bd2#
      • 1...Bc1
        • 2.Bd2#
        • 2.Be7#
      • 1...Bg1
        • 2.Bd2#
      • 1...Bd2
        • 2.Bxd2#
      • 1...Bf2
        • 2.Bd2#
      • 1...Bc5
        • 2.Bd2#
      • 1...Bb6
        • 2.Bd2#
      • 1...Ba7
        • 2.Bd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 10
    • REMOVED MATES = 1
  • Sets
    • K(b);P-FLIGHT,P_SPINB(a)::R(B)+B(C)
    • K(b);S_FLIGHT::QAR1(A)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT::R1(E)
      • Refutation
        • K(b);P-FLIGHT,XQ(A)
  • Actual
    • R(E);
    • Threat
      • QAB1(A),XB(a)
    • Vars
      • P(d);CHECK,SBLOCK::R(B)+B(C),DCHECK
      • K(b);P_SPINB(a),S_FLIGHT::B(C)
      • K(b);S_FLIGHT::B(C)
      • B(a);::B(C)
      • B(a);::R(B)+B(C),DCHECK
      • B(a);::R(B)+B(C),DCHECK,XB(a)
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