MESON Chess Problem Database

Problem Display
PID: 149017 (8/3ppp2/3PrP2/2pPkP2/R1b4K/2N2pN1/1QP1PRBB/8 w - - 0 1)

Fontana, Alessandro

Good Companions (May), 1918

8/3ppp2/3PrP2/2pPkP2/R1b4K/2N2pN1/1QP1PRBB/8

#2

14 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd6
      • 2.Sge4#
      • 2.Qb8#
    • 1...Kxf6
      • 2.Sce4#
    • 1...Bxd5
      • 2.Sb5#
    • 1...fxe2
      • 2.Sb5#
  • Tries
    • 1.Sce4+?
      • 1...Kf4
        • 2.Rxf3#
      • 1...Kxd5!
    • 1.Sb5+?
      • 1...Kf4
        • 2.Rxf3#
      • 1...Kxd5!
  • Keys
    • 1.e4!
      • 1...Kd4
        • 2.Sd1#
      • 1...Kf4
        • 2.Sf1#
      • 1...Kxd6
        • 2.Qb8#
      • 1...Kxf6
        • 2.Sh5#
      • 1...Rxd6
        • 2.Sce2#
      • 1...Rxf6
        • 2.Sge2#
      • 1...Bxd5
        • 2.Sh5#
      • 1...fxg2
        • 2.Sb5#
      • 1...exd6
        • 2.Sce2#
      • 1...exf6
        • 2.Sge2#
      • 1...Bf1
        • 2.Sh5#
      • 1...Ba2
        • 2.Sh5#
      • 1...Be2
        • 2.Sh5#
      • 1...Bb3
        • 2.Sh5#
      • 1...Bd3
        • 2.Sh5#
      • 1...Bb5
        • 2.Sh5#
      • 1...Ba6
        • 2.Sh5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 15
    • REMOVED MATES = 1
  • Sets
    • K(d);S_FLIGHT,XP(N)::QAB(A)+S(G),DCHECK
    • B(b);SBLOCK,XP(K)::QAB(A)+S(G)
    • P(a);XP(C)::QAB(A)+S(G)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(d);P_SPINP(a),S_FLIGHT::R1(D),XP(a)
      • Refutation
        • K(d);P-FLIGHT,XP(K)
    • Try
      • S(G);CHECK
      • Vars
        • K(d);P_SPINB(b),P_SPINP(a),S_FLIGHT::R1(D),XP(a)
      • Refutation
        • K(d);P-FLIGHT,P_SPINP(a),XP(K)
  • Actual
    • P(C);
    • Vars
      • K(d);P_SPINB(b),S_FLIGHT::QAB(A)+S(G)
      • K(d);P_SPINP(a),S_FLIGHT::B(F)+S(H)
      • K(d);OGATEB,S_FLIGHT,XP(M)::QAB(A)
      • K(d);S_FLIGHT,XP(N)::S(H)
      • R(e);SBLOCK,XP(M)::QAB(A)+S(G)
      • R(e);SBLOCK,XP(N)::B(F)+S(H)
      • B(b);XP(K)::B(F)+S(H)
      • P(a);XB(E)::QAB(A)+S(G)
      • P(g);SBLOCK,XP(M)::QAB(A)+S(G)
      • P(g);SBLOCK,XP(N)::B(F)+S(H)
      • B(b);::B(F)+S(H)
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