MESON Chess Problem Database

Problem Display
PID: 240574 (3K4/2PQ1p2/2P2Pp1/4k3/1N1Nr1P1/4n3/2b3n1/2B1RR2 w - - 0 1)

Cristoffanini, Guido

Shakhmaty i Shashki, 1929

3K4/2PQ1p2/2P2Pp1/4k3/1N1Nr1P1/4n3/2b3n1/2B1RR2

#2

11 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rxg4
      • 2.Qd5#
    • 1...Bd1
      • 2.Sd3#
    • 1...Bb3
      • 2.Sd3#
    • 1...Bd3
      • 2.Sxd3#
    • 1...Ba4
      • 2.Sd3#
    • 1...Sd1
      • 2.Qd5#
    • 1...Sc4
      • 2.Qd5#
    • 1...Sxg4
      • 2.Qd5#
    • 1...Sd5
      • 2.Qxd5#
  • Keys
    • 1.Bb2!
      • threat
        • 2.Qe7#
      • 1...Rxd4
        • 2.Qd5#
      • 1...Sxf1
        • 2.Se6#
      • 1...Sf4
        • 2.Sf3#
      • 1...Sf5
        • 2.Sxf5#
      • 1...Bb3
        • 2.Sd3#
      • 1...Sd5
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 7
  • Sets
    • R(d);P_SPINS(c),XP(F)::QAR1(J)
    • B(a);N_GUARD::S(D)
    • B(a);N_GUARD::S(D),XB(a)
    • S(c);N_GUARD,P_SPINR(d)::QAR1(J)
    • S(c);N_GUARD,P_SPINR(d),XP(F)::QAR1(J)
    • S(c);N_GUARD,P_SPINR(d)::QAR1(J),XS(c)
  • Actual
    • B(A);
    • Threat
      • QAR2(J)
    • Vars
      • R(d);P_PINQ(J),P_SPINR(d),P_SPINS(c),XS(E)::QAR1(J)
      • S(c);P_SPINR(d),XR(C)::B(A)+S(E)
      • S(b);SBLOCK::B(A)+S(E),DCHECK
      • S(c);P_SPINR(d)::B(A)+S(E),XS(c)
      • B(a);N_GUARD::S(D)
      • S(c);N_GUARD,P_SPINR(d)::QAR1(J),XS(c)
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Developed and maintained by Brian Stephenson.
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