MESON Chess Problem Database

Problem Display
PID: 239890 (K3BB2/8/2N5/p1R5/N2p2Qp/kp2p3/b5nb/1r2nr1q w - - 0 1)

Cristoffanini, Guido

Sinfonie Scacchistiche, 1975

K3BB2/8/2N5/p1R5/N2p2Qp/kp2p3/b5nb/1r2nr1q

#2

7 + 13

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kxa4
      • 2.Rxa5#
    • 1...Sf4
      • 2.Rc4#
      • 2.Rxa5#
  • Tries
    • 1.Rc4+?
      • 1...Bd6
        • 2.Bxd6#
      • 1...Rxf8!
    • 1.Rxa5+?
      • 1...Bd6
        • 2.Bxd6#
      • 1...Rxf8!
    • 1.Re5+?
      • 1...Kxa4
        • 2.Sxd4#
        • 2.Sxa5#
        • 2.Sa7#
        • 2.Sb8#
        • 2.Sd8#
        • 2.Rxa5#
        • 2.Qxd4#
      • 1...Rxf8!
    • 1.Rf5+?
      • 1...Kxa4
        • 2.Sxd4#
        • 2.Sxa5#
        • 2.Se5#
        • 2.Sa7#
        • 2.Sb8#
        • 2.Sd8#
        • 2.Rxa5#
        • 2.Qxd4#
      • 1...Bd6!
  • Keys
    • 1.Sxd4!
      • threat
        • 2.Sb5#
      • 1...Sf4+
        • 2.Rd5#
      • 1...Kb4
        • 2.Sc2#
      • 1...Rf4
        • 2.Rf5#
      • 1...Bf4
        • 2.Re5#
      • 1...b2
        • 2.Rc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • K(h);P-FLIGHT,P_SPINP(k),XS(A)::R1(C),XP(m)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • B(g);N_GUARD,P_SPINB(g)::B(G),XB(g)
      • Refutation
        • R(c);P_PINB(F),XB(G)
    • Try
      • R(C);CHECK,XP(m)
      • Vars
        • B(g);N_GUARD,P_SPINB(g)::B(G),XB(g)
      • Refutation
        • R(c);P_PINB(F),XB(G)
    • Try
      • R(C);CHECK
      • Refutation
        • R(c);P_PINB(F),XB(G)
    • Try
      • R(C);CHECK
      • Refutation
        • B(g);P_SPINB(g)
  • Actual
    • S(D);XP(k)
    • Threat
      • S(D)
    • Vars
      • S(f);CHECK,S_CUTB(g),S_CUTR(c)::B(G)+R(C)
      • K(h);S_FLIGHT::QAR(B)+S(D),DCHECK
      • R(c);S_CUTB(g)::B(G)+R(C)
      • B(g);S_CUTR(c)::B(G)+R(C)
      • P(i);::B(G)+R(C),DCHECK
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