MESON Chess Problem Database

Problem Display
PID: 67207 (8/Q7/3K4/1ppN4/1PkP4/1R1n4/1n6/NR1B4 w - - 0 1)

Stocchi, Ottavio

2nd HM., To Mat, 1954

8/Q7/3K4/1ppN4/1PkP4/1R1n4/1n6/NR1B4

#2

9 + 5

5407 Selected Stocchi (II) 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Sc1
      • 2.Qxc5#
    • 1...Se1
      • 2.Qxc5#
    • 1...Sf2
      • 2.Qxc5#
    • 1...Sxb4
      • 2.Qxc5#
    • 1...Sf4
      • 2.Qxc5#
    • 1...Se5
      • 2.Qxc5#
    • 1...cxb4
      • 2.Se3#
    • 1...cxd4
      • 2.Sb6#
  • Tries
    • 1.Rc1+?
      • 1...Sxc1
        • 2.Qxc5#
      • 1...Kxd4!
    • 1.R1xb2?
      • 1...Sxb2
        • 2.Qxc5#
      • 1...Sxb4
        • 2.Qxc5#
      • 1...cxb4
        • 2.Se3#
        • 2.Rc2#
      • 1...cxd4
        • 2.Sb6#
        • 2.Rc2#
      • 1...Sc1
        • 2.Qxc5#
      • 1...Se1
        • 2.Qxc5#
      • 1...Sf2
        • 2.Qxc5#
      • 1...Sf4
        • 2.Qxc5#
      • 1...Se5
        • 2.Qxc5#
      • 1...Kxd4!
    • 1.Qg7?
      • threat
        • 2.Se3#
        • 2.Sb6#
        • 2.Rc3#
      • 1...Sxd1
        • 2.Sb6#
      • 1...cxb4
        • 2.Se3#
        • 2.Sb6#
      • 1...cxd4
        • 2.Sb6#
      • 1...Sa4
        • 2.Se3#
      • 1...Se5!
  • Keys
    • 1.Sc2!
      • threat
        • 2.Rc3#
      • 1...Kxb3
        • 2.Sce3#
      • 1...Sxd1
        • 2.Sb6#
      • 1...cxb4
        • 2.Sce3#
      • 1...cxd4
        • 2.Sa3#
      • 1...Sa4
        • 2.Sde3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • S(b);N_GUARD::QAR1(I),XP(e)
    • S(b);N_GUARD,XP(E)::QAR1(I),XP(e)
    • P(e);XP(E)::S(G)
    • P(e);SBLOCK,XP(F)::S(G)
  • Tries
    • Try
      • R(B);CHECK
      • Vars
        • S(b);XR(B)::QAR1(I),XP(e)
      • Refutation
        • K(c);P-FLIGHT,P_SPINP(e),XP(F)
    • Try
      • R(B);XS(a)
      • Vars
        • S(b);N_GUARD,XR(B)::QAR1(I),XP(e)
        • S(b);N_GUARD,XP(E)::QAR1(I),XP(e)
        • S(b);N_GUARD::QAR1(I),XP(e)
      • Refutation
        • K(c);P-FLIGHT,P_SPINP(e),XP(F)
    • Try
      • Q(I);
      • Threat
        • DUALS(3)
      • Vars
        • S(a);XB(C)::S(G)
        • P(e);XP(F)::S(G)
        • S(a);::S(G)
      • Refutation
        • S(b);
  • Actual
    • S(A);
    • Threat
      • R1(D)
    • Vars
      • K(c);P_SPINS(a),S_FLIGHT,XR(D)::B(C)+S(A)
      • S(a);XB(C)::S(G)
      • P(e);XP(E)::S(A)
      • P(e);XP(F)::S(A)
      • S(a);::S(G)
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