MESON Chess Problem Database

Problem Display
PID: 240585 (b1R5/3r4/4Q3/1pNN4/1Pk2nBR/P1P1Pqp1/4p3/1K2b3 w - - 0 1)

Cristoffanini, Guido

Shakhmaty i Shashki, 1933

b1R5/3r4/4Q3/1pNN4/1Pk2nBR/P1P1Pqp1/4p3/1K2b3

#2

11 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qh1
      • 2.Bxe2#
    • 1...Qe4+
      • 2.Qxe4#
    • 1...Qxg4
      • 2.Qe4#
    • 1...Qf1
      • 2.Qe4#
    • 1...Qf2
      • 2.Qe4#
    • 1...Bxc3
      • 2.Sb6#
  • Keys
    • 1.Kc2!
      • threat
        • 2.Sb6#
      • 1...Qe4+
        • 2.Qxe4#
      • 1...Qxd5
        • 2.Bxe2#
      • 1...Rxd5
        • 2.Sb7#
      • 1...Bxd5
        • 2.Sxd7#
      • 1...Sxd5
        • 2.Bxf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • Q(c);OGATE::B(F),XP(b)
    • Q(c);CHECK,N_GUARD::QAR2(J),XQ(c)
    • Q(c);N_GUARD,XB(F)::QAR2(J)
    • Q(c);N_GUARD::QAR2(J)
    • B(a);SBLOCK,XP(C)::QAB(J)+S(I),DCHECK
  • Actual
    • K(A);S_FLIGHT
    • Threat
      • QAB(J)+S(I),DCHECK
    • Vars
      • Q(c);CHECK,N_GUARD::QAR2(J),XQ(c)
      • Q(c);OGATE,P_SPINQ(c),XS(I)::B(F),XP(b)
      • R(h);N_GUARD,P_SPINR(h),XS(I)::R(K)+S(H)
      • B(i);N_GUARD,P_SPINB(i),XS(I)::R(K)+S(H),XR(h)
      • S(f);OGATEB,P_SPINS(f),XS(I)::R(G)+B(F),XQ(c)
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