MESON Chess Problem Database

Problem Display
PID: 67089 (8/B2N4/4p3/n1bB4/3kp1NR/Q7/P4K2/5n2 w - - 0 1)

Stocchi, Ottavio

2nd HM., Schweizerische Arbeiter Schachzeitung, 1954

8/B2N4/4p3/n1bB4/3kp1NR/Q7/P4K2/5n2

#2

8 + 6

5407 Selected Stocchi (II) 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd5+
      • 2.Qxc5#
    • 1...e3+
      • 2.Sxe3#
  • Tries
    • 1.Sge5?
      • threat
        • 2.Qxc5#
        • 2.Qd3#
      • 1...Kxd5+
        • 2.Qxc5#
      • 1...Bxa7
        • 2.Qd3#
      • 1...Bb6
        • 2.Qd3#
      • 1...Sc4
        • 2.Qd3#
      • 1...Sb7
        • 2.Qd3#
      • 1...Sb3!
    • 1.Qb2+?
      • 1...Kd3+
        • 2.Sxc5#
      • 1...Kxd5+!
    • 1.Qb4+?
      • 1...Kxd5+
        • 2.Qxc5#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Kd3+!
    • 1.Qc3+?
      • 1...Kxd5+
        • 2.Qxc5#
      • 1...Kxc3+!
    • 1.Qe3+?
      • 1...Kxd5
        • 2.Qxc5#
      • 1...Sxe3!
  • Keys
    • 1.Bxe4!
      • threat
        • 2.Qd3#
      • 1...Kc4+
        • 2.Qxc5#
      • 1...Kxe4+
        • 2.Se3#
      • 1...Sb3
        • 2.Qb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • K(b);CHECK,N_SPINB(e),P-FLIGHT,XB(F)::QAR1(C),XB(e)
    • P(c);CHECK::R(E)+S(D),XP(c)
  • Tries
    • Try
      • S(D);P_PINP(c)
      • Threat
        • DUALS(2)
      • Vars
        • K(b);CHECK,N_SPINB(e),N_SPINP(c),P-FLIGHT,XB(F)::QAR1(C),XB(e)
        • B(e);N_SPINB(e),XB(G)::QAR1(C)
        • B(e);::QAR1(C)
        • S(d);::QAR1(C)
      • Refutation
        • S(d);
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);CHECK,N_SPINB(e),P-FLIGHT::S(H),XB(e)
      • Refutation
        • K(b);CHECK,N_SPINB(e),P-FLIGHT,XB(F)
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);CHECK,N_SPINB(e),P-FLIGHT,XB(F)::QAR1(C),XB(e)
        • S(d);N_GUARD,P_SPINS(d)::QAR1(C),XS(d)
      • Refutation
        • K(b);CHECK,N_SPINB(e),P-FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);CHECK,N_SPINB(e),P-FLIGHT,XB(F)::QAR1(C),XB(e)
      • Refutation
        • K(b);CHECK,N_SPINB(e),S_FLIGHT,XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);N_SPINB(e),OGATE,P-FLIGHT,P_PINQ(C),XB(F)::QAR1(C),XB(e)
      • Refutation
        • S(a);XQ(C)
  • Actual
    • B(F);XP(c)
    • Threat
      • QAR1(C)
    • Vars
      • K(b);CHECK,N_SPINB(e),P-FLIGHT::QAR1(C),XB(e)
      • K(b);CHECK,N_SPINB(e),P-FLIGHT,XB(F)::R(E)+S(D)
      • S(d);N_GUARD::QAR2(C)
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