MESON Chess Problem Database

Problem Display
PID: 28152 (2B2K2/2p2QP1/5BP1/1rr2Rpp/1Rp3k1/b4p1p/7P/8 w - - 0 1)

Stocchi, Ottavio

5th HM., Il Problema (Changed Mates TT), 1933

2B2K2/2p2QP1/5BP1/1rr2Rpp/1Rp3k1/b4p1p/7P/8

#2

9 + 10

3100 Selected Stocchi (I) 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Kh4
      • 2.Rf4#
    • 1...Rxf5
      • 2.Qxc4#
  • Tries
    • 1.Bd8?
      • threat
        • 2.Rf4#
      • 1...Kh4
        • 2.Rf4#
      • 1...h4
        • 2.Rxg5#
      • 1...Rxf5!
    • 1.Rxc5+?
      • 1...Kh4
        • 2.Bxg5#
        • 2.Rbxc4#
        • 2.Rcxc4#
        • 2.Qxc4#
      • 1...Kf4!
    • 1.Rd5+?
      • 1...Kh4
        • 2.Bxg5#
        • 2.Rd4#
      • 1...Kf4!
    • 1.Re5+?
      • 1...Kh4
        • 2.Bxg5#
        • 2.Re4#
      • 1...Kf4!
    • 1.Rxg5+?
      • 1...Kh4
        • 2.Rg4#
        • 2.Rxc5#
        • 2.Rd5#
        • 2.Re5#
      • 1...Kf4!
  • Keys
    • 1.Be7!
      • threat
        • 2.Rf4#
      • 1...Kh4
        • 2.Rf4#
      • 1...Rxf5
        • 2.Rxc4#
      • 1...h4
        • 2.Rxg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(e);P-FLIGHT::R(C)
    • R(g);N_GUARD,P_PINR(B),P_SPINR(g),XR(C)::QAR(F),XP(d)
  • Tries
    • Try
      • B(D);
      • Threat
        • B(H)+R(C),DCHECK
      • Vars
        • K(e);P-FLIGHT::R(C)
        • P(i);SBLOCK::B(H)+R(C),DCHECK,XP(h)
      • Refutation
        • R(g);P_PINQ(F),P_PINR(B),P_SPINR(g),XR(C)
    • Try
      • R(C);CHECK,XR(g)
      • Refutation
        • K(e);P-FLIGHT
    • Try
      • R(C);CHECK
      • Refutation
        • K(e);P-FLIGHT
    • Try
      • R(C);CHECK
      • Refutation
        • K(e);P-FLIGHT
    • Try
      • R(C);CHECK,XP(h)
      • Refutation
        • K(e);P-FLIGHT
  • Actual
    • B(D);
    • Threat
      • B(H)+R(C),DCHECK
    • Vars
      • K(e);P-FLIGHT::R(C)
      • R(g);N_GUARD,P_PINQ(F),P_SPINR(g),XR(C)::R(B),XP(d)
      • P(i);SBLOCK::B(H)+R(C),DCHECK,XP(h)
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