MESON Chess Problem Database

Problem Display
PID: 138240 (6B1/5q1r/3p1R2/1QBNp3/RpK1k1P1/pN6/4Pn2/1n6 w - - 0 1)

Mirri, Giorgio

5th Place, 01. WCCT, 1972-1975

6B1/5q1r/3p1R2/1QBNp3/RpK1k1P1/pN6/4Pn2/1n6

#2

10 + 9

14744 Nuova Antologia dei Problemisti Italiani 1992

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd5+
      • 2.Bxd5#
    • 1...Qf8
      • 2.Bxh7#
    • 1...Sd2+
      • 2.Sxd2#
    • 1...Sc3
      • 2.Sd2#
    • 1...Sd3
      • 2.exd3#
    • 1...dxc5
      • 2.Sxc5#
  • Tries
    • 1.Bxh7+?
      • 1...Qg6
        • 2.Bxg6#
      • 1...Qxh7!
  • Keys
    • 1.Kxb4!
      • threat
        • 2.Qc4#
      • 1...Sd3+
        • 2.Qxd3#
      • 1...dxc5+
        • 2.Kxc5#
      • 1...Kxd5
        • 2.Qb7#
      • 1...Qxd5
        • 2.Bxh7#
      • 1...Qb7
        • 2.Ka5#
      • 1...Sd2
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • Q(h);CHECK,OGATE,XS(H)::B(J),XQ(h)
    • Q(h);N_GUARD,N_PINS(H)::B(J),XR(i)
    • S(a);CHECK,N_GUARD::S(B),XS(a)
    • S(a);N_GUARD::S(B)
    • S(b);OGATE::P(A),XS(b)
    • P(g);XB(G)::S(B),XP(g)
  • Tries
    • Try
      • B(J);CHECK,XR(i)
      • Vars
        • Q(h);N_GUARD,N_PINS(H),P_SPINQ(h)::B(J),XQ(h)
      • Refutation
        • Q(h);N_PINS(H),XB(J)
  • Actual
    • K(D);N_SPINS(H),P-FLIGHT,XP(d)
    • Threat
      • QAR2(F)
    • Vars
      • S(b);CHECK,N_GUARD::QAB1(F),XS(b)
      • P(g);CHECK,XB(G)::R(C)+K(D),XP(g)
      • K(e);OGATEB,P_SPINQ(h),S_FLIGHT,XS(H)::QAB(F)
      • Q(h);N_GUARD,SBLOCK,XS(H)::B(J),XR(i)
      • Q(h);P_PINQ(F)::R(C)+K(D)
      • S(a);N_GUARD::S(H)
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