MESON Chess Problem Database

Problem Display
PID: 109961 (3R4/q1pNpr1b/R1P1pb2/1p1kP1P1/3nN3/2BP4/p5K1/7B w - - 0 1)

Bottacchi, Antonio

Good Companions (March), 1918

3R4/q1pNpr1b/R1P1pb2/1p1kP1P1/3nN3/2BP4/p5K1/7B

#2

11 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bxe5
      • 2.Sdf6#
    • 1...Sc2
      • 2.Sdc5#
      • 2.Sdxf6#
      • 2.Sb8#
      • 2.Sf8#
    • 1...Se2
      • 2.Sdc5#
      • 2.Sdxf6#
      • 2.Sb8#
      • 2.Sf8#
    • 1...Sb3
      • 2.Sdc5#
      • 2.Sdxf6#
      • 2.Sb8#
      • 2.Sf8#
    • 1...Sf3
      • 2.Sdc5#
      • 2.Sdxf6#
      • 2.Sb8#
      • 2.Sf8#
    • 1...Sf5
      • 2.Sdxf6#
    • 1...Sxc6
      • 2.Sb6#
      • 2.Sdxf6#
  • Tries
    • 1.Kh3?
      • threat
        • 2.Sexf6#
      • 1...Bxe5
        • 2.Sdf6#
      • 1...Bxg5
        • 2.Sef6#
      • 1...Bxe4
        • 2.Bxe4#
      • 1...Bg7
        • 2.Sef6#
      • 1...Bh8
        • 2.Sef6#
      • 1...Sf3
        • 2.Sdc5#
        • 2.Sdxf6#
        • 2.Sb8#
        • 2.Sf8#
      • 1...Bf5+!
  • Keys
    • 1.Kf2!
      • threat
        • 2.Sexf6#
      • 1...Bxe5+
        • 2.Sdf6#
      • 1...Bxg5+
        • 2.Sef6#
      • 1...Bg7+
        • 2.Sef6#
      • 1...Bh8+
        • 2.Sef6#
      • 1...Sc2+
        • 2.Sdc5#
      • 1...Se2+
        • 2.Sdc5#
      • 1...Sb3+
        • 2.Sdc5#
      • 1...Sf3+
        • 2.Sdc5#
      • 1...Sf5+
        • 2.Sec5#
      • 1...Sxc6+
        • 2.Sb6#
      • 1...Bxe4
        • 2.Bxe4#

This is a version of 21344

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • B(f);SBLOCK,XP(F)::R(K)+S(J),DCHECK
    • S(b);::R(K)+S(J),DCHECK,XB(f)
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Threat
        • B(A)+S(E),DCHECK,XB(f)
      • Vars
        • B(f);SBLOCK,XP(F)::R(K)+S(J),DCHECK
        • B(f);XP(G)::B(A)+S(E),DCHECK
        • B(k);OGATE,P_SPINB(k),XS(E)::B(A),XB(k)
        • B(f);::B(A)+S(E),DCHECK
      • Refutation
        • B(k);CHECK
  • Actual
    • K(B);P-FLIGHT
    • Threat
      • B(A)+S(E),DCHECK,XB(f)
    • Vars
      • B(f);CHECK,SBLOCK,XP(F)::R(K)+S(J),DCHECK
      • B(f);CHECK,XP(G)::B(A)+S(E),DCHECK
      • B(f);CHECK::B(A)+S(E),DCHECK
      • S(b);CHECK::R(K)+S(J)
      • S(b);CHECK,N_GUARD,S_CUTB(k)::B(A)+S(E)
      • S(b);CHECK,SBLOCK,XP(I)::R(K)+S(J),DCHECK
      • B(k);OGATE,P_SPINB(k),XS(E)::B(A),XB(k)
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