MESON Chess Problem Database

Problem Display
PID: 67206 (1B6/b3p1q1/bp2p3/3R2Rr/1KN1k3/2ppP1pp/6n1/3N1Qn1 w - - 0 1)

Stocchi, Ottavio

2nd HM., Problemas, 1954

1B6/b3p1q1/bp2p3/3R2Rr/1KN1k3/2ppP1pp/6n1/3N1Qn1

#2

8 + 14

5407 Selected Stocchi (II) 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Qd4
      • 2.Rxd4#
    • 1...Qe5
      • 2.Rdxe5#
    • 1...Qh6
      • 2.Sxc3#
      • 2.Rd4#
      • 2.Rde5#
    • 1...Qf8
      • 2.Sxc3#
      • 2.Rd4#
      • 2.Rde5#
    • 1...Qxg5
      • 2.Sxc3#
      • 2.Rd4#
    • 1...Qg6
      • 2.Sxc3#
      • 2.Rd4#
      • 2.Rde5#
    • 1...Qf7
      • 2.Sxc3#
      • 2.Rd4#
      • 2.Rde5#
    • 1...Qh7
      • 2.Sxc3#
      • 2.Rd4#
      • 2.Rde5#
    • 1...Qg8
      • 2.Sxc3#
      • 2.Rd4#
      • 2.Rde5#
    • 1...Sf3
      • 2.Qxd3#
    • 1...Se1
      • 2.Qf4#
    • 1...Sxe3
      • 2.Qf4#
    • 1...Sf4
      • 2.Qxf4#
    • 1...Sh4
      • 2.Qf4#
    • 1...c2
      • 2.Sd2#
    • 1...exd5
      • 2.Qf5#
    • 1...e5
      • 2.Sxc3#
  • Tries
    • 1.Rge5+?
      • 1...Rxe5
        • 2.Sxc3#
        • 2.Rd4#
      • 1...Qxe5!
  • Keys
    • 1.Se5!
      • threat
        • 2.Rd4#
      • 1...Kxd5
        • 2.Sxc3#
      • 1...Qxe5
        • 2.Rdxe5#
      • 1...Sxe3
        • 2.Sxc3#
      • 1...exd5
        • 2.Qf5#
      • 1...Se2
        • 2.Qf3#
      • 1...Sf3
        • 2.Qxf3#
      • 1...b5
        • 2.Qxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • Q(n);N_GUARD,P_PINS(E)::R1(F),XQ(n)
    • Q(n);N_GUARD::R1(F),XQ(n)
    • S(a);SBLOCK::QAB1(B),XP(d)
    • S(b);N_GUARD::QAR1(B)
    • S(b);N_GUARD,XP(C)::QAR1(B)
    • S(b);N_GUARD::QAR1(B),XS(b)
    • P(c);N_GUARD::S(E)
    • P(k);N_GUARD,XR(F)::QAB1(B)
    • P(k);S_CUTQ(n)::S(A),XP(c)
  • Tries
    • Try
      • R(G);CHECK
      • Refutation
        • Q(n);XR(G)
  • Actual
    • S(E);
    • Threat
      • R1(F)
    • Vars
      • K(g);S_FLIGHT,XR(F)::S(A),XP(c)
      • Q(n);OGATE,XS(E)::R1(F),XQ(n)
      • S(b);SBLOCK,XP(C)::S(A),XP(c)
      • P(k);N_GUARD,SBLOCK,XR(F)::QAB1(B)
      • S(a);N_GUARD::QAB1(B)
      • S(a);N_GUARD::QAB1(B),XS(a)
      • P(j);S_CUTB(i)::QAB1(B),XP(d)
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