MESON Chess Problem Database

Problem Display
PID: 114199 (8/q2p2b1/pr1RN1Qp/1nNPk1PR/1Pr5/2p3P1/8/6KB w - - 0 1)

Stocchi, Ottavio

Arbejder-Skak, 1953

8/q2p2b1/pr1RN1Qp/1nNPk1PR/1Pr5/2p3P1/8/6KB

#2

11 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd6
      • 2.gxh6#
    • 1...Sxd6
      • 2.Sd3#
  • Tries
    • 1.Qxg7+?
      • 1...Kf5
        • 2.gxh6#
      • 1...Kxd6!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Sf3#
      • 1...Kxd4
        • 2.Qe4#
      • 1...Rxd4
        • 2.gxh6#
      • 1...Rxd6
        • 2.Qe4#
      • 1...Sxd4
        • 2.Sd3#
      • 1...Sxd6
        • 2.Qxg7#
      • 1...Bf6
        • 2.Qxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • R(f);P_PINS(E),SBLOCK,XR(I)::R(H)+P(G),XP(g)
    • S(c);SBLOCK,XR(I)::S(E)
  • Tries
    • Try
      • Q(K);CHECK,XB(j)
      • Vars
        • K(d);P-FLIGHT::R(H)+P(G),XP(g)
      • Refutation
        • K(d);S_FLIGHT,XR(I)
  • Actual
    • S(J);
    • Threat
      • S(J)
    • Vars
      • K(d);S_FLIGHT,XS(J)::QAR1(K)
      • R(b);SBLOCK,XS(J)::R(H)+P(G),XP(g)
      • R(f);SBLOCK,XR(I)::QAR1(K)
      • S(c);SBLOCK,XS(J)::S(E)
      • S(c);SBLOCK,XR(I)::QAB(K),XB(j)
      • B(j);N_GUARD::QAB1(K),XB(j)
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