MESON Chess Problem Database

Problem Display
PID: 67054 (4N1K1/B4Q2/3P1P2/1P1Pb3/1pr1k2n/qR1N2p1/1rBpn3/5R2 w - - 0 1)

Stocchi, Ottavio

3rd Prize, To Mat, 1953

4N1K1/B4Q2/3P1P2/1P1Pb3/1pr1k2n/qR1N2p1/1rBpn3/5R2

#2

12 + 10

5407 Selected Stocchi (II) 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Sc5#
    • 1...Bxd6
      • 2.Sxd6#
    • 1...Bxf6
      • 2.Sxf6#
    • 1...Sc3
      • 2.Sxb2#
    • 1...Sd4
      • 2.Sc5#
    • 1...Sf4
      • 2.Sf2#
  • Tries
    • 1.Rf4+?
      • 1...Sxf4
        • 2.Sf2#
      • 1...Bxf4!
  • Keys
    • 1.Qh5!
      • threat
        • 2.Qxe5#
      • 1...Kxd5
        • 2.Qxe5#
      • 1...Bxd6
        • 2.Sxd6#
      • 1...Bxf6
        • 2.Sxf6#
      • 1...Bc3
        • 2.Sxb2#
      • 1...Bd4
        • 2.Sc5#
      • 1...Bf4
        • 2.Sf2#
      • 1...Sf3
        • 2.Qxf3#
      • 1...Sf5
        • 2.Qf3#
      • 1...Sg6
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 4
  • Sets
    • R(g);SBLOCK::B(B)+S(D),DCHECK
    • B(j);XP(G)::S(K),XB(j)
    • B(j);XP(H)::S(K),XB(j)
    • S(c);S_CUTR(g)::B(B)+S(D),XR(a)
    • S(c);SBLOCK::B(B)+S(D),DCHECK
  • Tries
    • Try
      • R(A);CHECK
      • Vars
        • S(c);SBLOCK,XR(A)::B(B)+S(D),DCHECK
      • Refutation
        • B(j);XR(A)
  • Actual
    • Q(J);
    • Threat
      • QAR1(J),XB(j)
    • Vars
      • K(h);P_SPINB(j),S_FLIGHT,XP(F)::QAR1(J),XB(j)
      • B(j);XP(G)::S(K),XB(j)
      • B(j);XP(H)::S(K),XB(j)
      • B(j);S_CUTR(g)::B(B)+S(D),XR(a)
      • B(j);SBLOCK::B(B)+S(D),DCHECK
      • S(i);N_GUARD::QAB1(J),XS(i)
      • S(i);N_GUARD::QAB1(J)
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