MESON Chess Problem Database

Problem Display
PID: 155134 (1bn4B/3pp1R1/1P6/1P2k3/3p2B1/1Q2P3/8/K7 w - - 0 1)

Cuppini, Alessandro

Rhein-Main Presse, 2000

1bn4B/3pp1R1/1P6/1P2k3/3p2B1/1Q2P3/8/K7

#2

8 + 6

15391 Problemschach-Jahrbuch (2000) 2001
3713 Snap 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Kf6
      • 2.Rg8#
    • 1...Bd6
      • 2.Rxe7#
    • 1...Sd6
      • 2.Rxe7#
    • 1...d6
      • 2.Rxe7#
      • 2.Qe6#
  • Tries
    • 1.Rg5+?
      • 1...Kd6
        • 2.Rd5#
        • 2.Qd5#
        • 2.Qa3#
        • 2.Qb4#
      • 1...Ke4!
    • 1.Rf7+?
      • 1...Ke4
        • 2.Bf3#
      • 1...Kd6!
    • 1.Qc4?
      • threat
        • 2.Qxd4#
      • 1...Ke4
        • 2.Qxd4#
      • 1...Kd6
        • 2.Qxd4#
      • 1...Kf6
        • 2.Rg8#
      • 1...dxe3
        • 2.Rg6#
      • 1...d3
        • 2.Rg6#
        • 2.Qd4#
      • 1...d5!
    • 1.Qd5+?
      • 1...Kf6
        • 2.Rg5#
        • 2.Rg8#
        • 2.Qf5#
        • 2.Qg5#
      • 1...Kxd5!
    • 1.Qb4?
      • threat
        • 2.Qxd4#
      • 1...Ke4
        • 2.Qxd4#
      • 1...Kd5
        • 2.Qxd4#
      • 1...dxe3
        • 2.Rg5#
      • 1...d5
        • 2.Rxe7#
      • 1...d3
        • 2.Rg5#
        • 2.Qd4#
      • 1...Kf6!
  • Keys
    • 1.Qd3!
      • threat
        • 2.Qxd4#
      • 1...Kd5
        • 2.Qxd4#
      • 1...Kd6
        • 2.Qxd4#
      • 1...Kf6
        • 2.Qf5#
      • 1...dxe3
        • 2.Rf7#
      • 1...d5
        • 2.Rg6#

Anticipated by 96341(1993)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • K(b);S_FLIGHT::B(H)+R(G)
    • B(e);SBLOCK::B(H)+R(G),DCHECK,XP(d)
    • S(f);SBLOCK::B(H)+R(G),DCHECK,XP(d)
  • Tries
    • Try
      • R(G);CHECK
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • R(G);CHECK
      • Vars
        • K(b);P-FLIGHT::B(D)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);
      • Threat
        • QAB1(B),XP(a)
      • Vars
        • K(b);P-FLIGHT,P_SPINP(a)::QAR1(B),XP(a)
        • K(b);S_FLIGHT::QAR2(B),XP(a)
        • K(b);S_FLIGHT::B(H)+R(G)
        • P(a);XP(C)::B(H)+R(G)
      • Refutation
        • P(c);
    • Try
      • Q(B);CHECK
      • Refutation
        • K(b);P-FLIGHT,XQ(B)
    • Try
      • Q(B);
      • Threat
        • QAB1(B),XP(a)
      • Vars
        • K(b);P-FLIGHT,P_SPINP(a)::QAR1(B),XP(a)
        • K(b);P-FLIGHT::QAR1(B),XP(a)
        • P(a);XP(C)::B(H)+R(G),DCHECK
        • P(c);SBLOCK::B(H)+R(G),DCHECK,XP(d)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(B);
    • Threat
      • QAB1(B),XP(a)
    • Vars
      • K(b);P-FLIGHT,P_SPINP(a)::QAR1(B),XP(a)
      • K(b);P_SPINP(a),S_FLIGHT::QAR2(B),XP(a)
      • K(b);S_FLIGHT::QAR1(B)
      • P(a);XP(C)::B(H)+R(G)
      • P(c);SBLOCK::B(H)+R(G)
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