MESON Chess Problem Database

Problem Display
PID: 64040 (1K4b1/4p3/1N1B4/1Np2P1B/R1r1knQ1/3p1R2/2P3Pb/4rq1n w - - 0 1)

Stocchi, Ottavio

1st HM., Nynorsk Vekeblad, 1951

1K4b1/4p3/1N1B4/1Np2P1B/R1r1knQ1/3p1R2/2P3Pb/4rq1n

#2

11 + 11

5407 Selected Stocchi (II) 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Qxg2
      • 2.cxd3#
    • 1...Qg1
      • 2.cxd3#
    • 1...Qf2
      • 2.cxd3#
    • 1...Re2
      • 2.cxd3#
    • 1...Rd4
      • 2.Sc3#
    • 1...Bg1
      • 2.Qxf4#
    • 1...Bh7
      • 2.Rxc4#
    • 1...Sg3
      • 2.Qxf4#
    • 1...e6
      • 2.Rxc4#
  • Tries
    • 1.Bxf4?
      • threat
        • 2.Bxh2#
        • 2.Bg3#
      • 1...Bxf4+
        • 2.Qxf4#
      • 1...Qxg2
        • 2.Bg3#
        • 2.cxd3#
      • 1...Qxf3
        • 2.gxf3#
      • 1...Bg1
        • 2.Bh2#
        • 2.Bg3#
        • 2.Bd6#
        • 2.Bc7#
      • 1...Bg3
        • 2.Bxg3#
      • 1...Sg3
        • 2.Bxg3#
        • 2.Bd6#
        • 2.Bc7#
      • 1...Sf2!
  • Keys
    • 1.Qg7!
      • threat
        • 2.Qe5#
      • 1...Kxf5
        • 2.Qg6#
      • 1...Sxg2
        • 2.Sc3#
      • 1...Sxh5
        • 2.Sc3#
      • 1...exd6
        • 2.Sxd6#
      • 1...Se2
        • 2.cxd3#
      • 1...Sh3
        • 2.Sc3#
      • 1...Sd5
        • 2.Rxc4#
      • 1...Se6
        • 2.Sc3#
      • 1...Sg6
        • 2.Sc3#
      • 1...e5
        • 2.Qxe5#

This is a version

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 9
  • Sets
    • Q(b);N_GUARD,XP(B)::P(A),XP(e)
    • Q(b);N_GUARD::P(A),XP(e)
    • R(a);S_CUTQ(b)::P(A),XP(e)
    • R(f);::S(F)
    • B(d);N_GUARD::QAR1(E),XS(h)
    • B(k);N_GUARD::R(D),XR(f)
    • S(c);S_CUTB(d)::QAR1(E),XS(h)
    • P(j);S_CUTB(k)::R(D),XR(f)
  • Tries
    • Try
      • B(J);P_SPINB(J),XS(h)
      • Threat
        • DUALS(2)
      • Vars
        • B(d);CHECK,OGATE,P_SPINB(d),XB(J)::QAR1(E),XB(d)
        • Q(b);XR(C)::P(B),XQ(b)
        • B(d);::QAR(E)+B(J),XB(d)
      • Refutation
        • S(c);
  • Actual
    • Q(E);N_PINS(h)
    • Threat
      • QAR1(E)
    • Vars
      • K(g);N_SPINR(f),OGATEB,P_SPINS(h),S_FLIGHT,XP(G)::QAB1(E)
      • S(h);P_PINB(J),XP(B)::S(F)
      • S(h);P_PINB(J),XB(H)::S(F)
      • P(j);XB(J)::S(F),XP(j)
      • S(h);N_GUARD,P_PINB(J),S_CUTQ(b)::P(A),XP(e)
      • S(h);P_PINB(J)::S(F)
      • S(h);P_PINB(J),S_CUTB(k)::R(D),XR(f)
      • P(j);::QAR1(E),XP(j)
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