MESON Chess Problem Database

Problem Display
PID: 66834 (2N1R3/8/1qp5/1pR3NK/n2k1pP1/r2P4/Br3b2/B1Q2b2 w - - 0 1)

Stocchi, Ottavio

Norsk Sjakkblad, 1953

2N1R3/8/1qp5/1pR3NK/n2k1pP1/r2P4/Br3b2/B1Q2b2

#2

10 + 10

5407 Selected Stocchi (II) 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Qd8
      • 2.Rxd8#
    • 1...Qa6
      • 2.Rd8#
    • 1...Rxd3
      • 2.Re4#
    • 1...Bxd3
      • 2.Sf3#
    • 1...b4
      • 2.Qc4#
  • Tries
    • 1.Qxf4+?
      • 1...Kxc5
        • 2.Se6#
        • 2.Re5#
        • 2.Qd6#
      • 1...Kxd3!
  • Keys
    • 1.Qd2!
      • threat
        • 2.Se6#
      • 1...Kxc5
        • 2.Se6#
      • 1...Qxc5
        • 2.Re4#
      • 1...Rxd3
        • 2.Qb4#
      • 1...Bxd3
        • 2.Qxf2#
      • 1...Sxc5
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • Q(i);N_GUARD::R(J),XQ(i)
    • Q(i);N_GUARD::R(J)
    • R(d);SBLOCK,XP(D)::R1(J)
    • B(a);SBLOCK,XP(D)::S(G)
    • P(h);N_GUARD::QAR1(B)
  • Tries
    • Try
      • Q(B);CHECK,XP(g)
      • Refutation
        • K(f);N_SPINR(b),P-FLIGHT,XP(D)
  • Actual
    • Q(B);
    • Threat
      • S(G)
    • Vars
      • K(f);N_SPINR(b),S_FLIGHT,XR(F)::S(G)
      • Q(i);P_PINS(G),SBLOCK,XR(F)::R1(J)
      • R(d);SBLOCK,XP(D)::QAR2(B)
      • B(a);P_SPINB(a),SBLOCK,XP(D)::QAB(B),XB(c)
      • S(e);SBLOCK,XR(F)::S(G)
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