MESON Chess Problem Database

Problem Display
PID: 29049 (8/n7/8/1p2P2R/1p1kN2R/5Q1K/1PPr1b2/2B4B w - - 0 1)

Stocchi, Ottavio

8th Comm., BCF 028. Ty., 1938-1939

8/n7/8/1p2P2R/1p1kN2R/5Q1K/1PPr1b2/2B4B

#2

10 + 6

3100 Selected Stocchi (I) 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Re2
      • 2.Qd3#
    • 1...Rd3
      • 2.Qxd3#
  • Tries
    • 1.Sxd2+?
      • 1...Kc5
        • 2.Qxf2#
      • 1...Bxh4!
    • 1.Qxf2+?
      • 1...Kc4
        • 2.Sxd2#
        • 2.Sd6#
        • 2.Qc5#
      • 1...Kd5
        • 2.Sc5#
      • 1...Rxf2!
    • 1.Qc3+?
      • 1...Kd5
        • 2.Sc5#
        • 2.Sg5#
      • 1...bxc3!
  • Keys
    • 1.Qf8!
      • threat
        • 2.Qc5#
      • 1...Rd3+
        • 2.Sg3#
      • 1...Ke3
        • 2.Qxf2#
      • 1...Kc4
        • 2.Sxd2#
      • 1...Kd5
        • 2.Sc5#
      • 1...Rxc2
        • 2.Sxf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • R(a);N_GUARD::QAR1(E)
    • R(a);N_GUARD,P_PINQ(E)::QAR1(E),XR(a)
  • Tries
    • Try
      • S(G);CHECK,XR(a)
      • Vars
        • K(d);S_FLIGHT::QAB(E),XB(b)
      • Refutation
        • B(b);XR(H)
    • Try
      • Q(E);CHECK,XB(b)
      • Vars
        • K(d);P-FLIGHT::B(B)+S(G)
      • Refutation
        • R(a);XQ(E)
    • Try
      • Q(E);CHECK
      • Refutation
        • P(c);XQ(E)
  • Actual
    • Q(E);
    • Threat
      • QAB1(E)
    • Vars
      • R(a);CHECK::R(H)+S(G)
      • K(d);P_SPINR(a),S_FLIGHT::QAB1(E),XB(b)
      • K(d);P-FLIGHT::R(H)+S(G),DCHECK,XR(a)
      • K(d);P-FLIGHT::B(B)+S(G)
      • R(a);XP(D)::R(H)+S(G),XB(b)
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