MESON Chess Problem Database

Problem Display
PID: 7012 (8/2p1pKn1/1P3R2/QP1k1p2/3pN3/8/2P5/B3RB2 w - - 0 1)

Stocchi, Ottavio

Problemi di Ottavio Stocchi, 1995

8/2p1pKn1/1P3R2/QP1k1p2/3pN3/8/2P5/B3RB2

#2

10 + 6

3100 Selected Stocchi (I) 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Se6
      • 2.Rxf5#
    • 1...d3
      • 2.Qa2#
    • 1...c5
      • 2.bxc5 ep#
    • 1...c6
      • 2.bxc6#
    • 1...e5
      • 2.Qa2#
  • Tries
    • 1.Sc3+?
      • 1...Kc5
        • 2.Re5#
        • 2.Rc6#
        • 2.Qa3#
      • 1...dxc3!
    • 1.Rxf5+?
      • 1...e5
        • 2.Qa2#
      • 1...Sxf5!
    • 1.Qb4?
      • threat
        • 2.Qc5#
        • 2.Qxd4#
      • 1...fxe4
        • 2.Qxd4#
      • 1...cxb6
        • 2.Qxd4#
      • 1...Se6
        • 2.Rxf5#
      • 1...d3
        • 2.Sc3#
        • 2.Qc5#
        • 2.Qb3#
        • 2.Qd4#
        • 2.c4#
      • 1...c5
        • 2.Qxc5#
      • 1...e5
        • 2.Bc4#
        • 2.Qc5#
        • 2.Qb3#
        • 2.Qc4#
      • 1...Ke5!
  • Keys
    • 1.Qd2!
      • threat
        • 2.Qxd4#
      • 1...Ke5
        • 2.Sc3#
      • 1...Se6
        • 2.Rxf5#
      • 1...d3
        • 2.Qxd3#
      • 1...c5
        • 2.Sc3#
      • 1...e5
        • 2.c4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • S(f);N_GUARD,S_CUTP(e)::R(I),XP(c)
    • P(a);::QAB(F)
    • P(d);OGATE::QAR(F)+P(G),XP(d),EP
    • P(d);OGATE::QAR(F)+P(G),XP(d)
    • P(e);SBLOCK::QAB(F)
  • Tries
    • Try
      • S(E);CHECK
      • Refutation
        • P(a);XS(E)
    • Try
      • R(I);CHECK,XP(c)
      • Vars
        • P(e);P_SPINP(e)::QAB(F)
      • Refutation
        • S(f);XR(I)
    • Try
      • Q(F);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);XS(E)::QAR1(F),XP(a)
        • P(d);XP(H)::QAR1(F),XP(a)
        • S(f);N_GUARD,S_CUTP(e)::R(I),XP(c)
        • P(d);::QAR1(F),XP(d)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(a)
  • Actual
    • Q(F);P_PINP(a)
    • Threat
      • QAR1(F),XP(a)
    • Vars
      • K(b);P-FLIGHT::R(B)+S(E)
      • S(f);N_GUARD,S_CUTP(e)::R(I),XP(c)
      • P(a);OGATEB::QAR2(F),XP(a)
      • P(d);SBLOCK::S(E)
      • P(e);SBLOCK::P(D)
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