MESON Chess Problem Database

Problem Display
PID: 30462 (4qb2/Q7/2pPp3/1pr1k1NR/6P1/2p1N1p1/4K3/1B1R4 w - - 0 1)

Stocchi, Ottavio

Problemi di Ottavio Stocchi, 1995

4qb2/Q7/2pPp3/1pr1k1NR/6P1/2p1N1p1/4K3/1B1R4

#2

9 + 9

3100 Selected Stocchi (I) 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Sh3#
    • 1...Kf6
      • 2.Sh7#
  • Tries
    • 1.Sf3+?
      • 1...Kf4
        • 2.Rd4#
      • 1...Kf6!
    • 1.Se4+?
      • 1...Kf4
        • 2.Rf1#
      • 1...Qxh5!
    • 1.Sf7+?
      • 1...Kf4
        • 2.Rf1#
        • 2.Rd4#
      • 1...Kf6!
    • 1.Sh7+?
      • 1...Kf4
        • 2.Rf1#
        • 2.Rd4#
      • 1...Qxh5!
    • 1.Qxc5+?
      • 1...Kf4
        • 2.Sh3#
        • 2.Rf1#
        • 2.Rd4#
        • 2.Qd4#
      • 1...Kf6!
    • 1.Qg7+?
      • 1...Kf4
        • 2.Sh3#
        • 2.Rf1#
        • 2.Rd4#
        • 2.Qd4#
      • 1...Bxg7!
  • Keys
    • 1.Rf1!
      • threat
        • 2.Qxc5#
      • 1...Kd4
        • 2.Sf3#
      • 1...Kxd6
        • 2.Se4#
      • 1...Bxd6
        • 2.Qg7#
      • 1...Rc4
        • 2.Sf7#
      • 1...Rd5
        • 2.Sf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • K(e);S_FLIGHT::S(F)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(e);S_FLIGHT::R(B)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • S(F);CHECK
      • Vars
        • K(e);S_FLIGHT::R(B)
      • Refutation
        • Q(h);P_PINP(E),XR(G)
    • Try
      • S(F);CHECK
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • S(F);CHECK
      • Refutation
        • Q(h);P_PINP(E),XR(G)
    • Try
      • Q(I);CHECK,XR(d)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • Q(I);CHECK
      • Refutation
        • B(i);XQ(I)
  • Actual
    • R(B);
    • Threat
      • QAR2(I),XR(d)
    • Vars
      • K(e);P_SPINR(d),S_FLIGHT::S(F)
      • K(e);S_FLIGHT,XP(H)::S(F)
      • B(i);N_GUARD,SBLOCK,XP(H)::QAB(I)
      • R(d);::R(G)+S(F),DCHECK
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