MESON Chess Problem Database

Problem Display
PID: 97316 (2B2b2/R1n2P2/p1pk4/5RB1/3PP3/1N6/K5n1/5b2 w - - 0 1)

Stocchi, Ottavio

Problemi di Ottavio Stocchi, 1995

2B2b2/R1n2P2/p1pk4/5RB1/3PP3/1N6/K5n1/5b2

#2

9 + 7

14475 Mat Plus Review 2007
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sb5
      • 2.Rf6#
    • 1...Sd5
      • 2.e5#
    • 1...Se6
      • 2.Rd7#
    • 1...Sa8
      • 2.Rf6#
    • 1...Se8
      • 2.fxe8S#
  • Tries
    • 1.Sc5?
      • threat
        • 2.Sb7#
      • 1...Sb5
        • 2.Rf6#
        • 2.Rd7#
      • 1...Sd5
        • 2.Rd7#
        • 2.e5#
      • 1...Se6
        • 2.Rd7#
      • 1...Sa8
        • 2.Rf6#
        • 2.Rd7#
      • 1...Se8
        • 2.Rd7#
        • 2.fxe8S#
      • 1...Bc4+!
    • 1.Rd5+?
      • 1...Sxd5
        • 2.e5#
      • 1...cxd5!
    • 1.Rf6+?
      • 1...Se6
        • 2.Rxe6#
        • 2.Rd7#
      • 1...Ke7!
  • Keys
    • 1.Sa5!
      • threat
        • 2.Sb7#
      • 1...Bc4+
        • 2.Sxc4#
      • 1...Sb5
        • 2.Rf6#
      • 1...Sd5
        • 2.e5#
      • 1...Se6
        • 2.Rd7#
      • 1...Sa8
        • 2.Rf6#
      • 1...Se8
        • 2.fxe8S#
      • 1...c5
        • 2.dxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(f);N_GUARD::R(E)
    • S(f);SBLOCK::P(D)
    • S(f);OGATE,SBLOCK::R1(G)
    • S(f);OGATE::PXS(f)=S
  • Tries
    • Try
      • S(B);
      • Threat
        • S(B)
      • Vars
        • S(f);OGATE::R1(G)
      • Refutation
        • B(a);CHECK
    • Try
      • R(E);CHECK
      • Vars
        • S(f);SBLOCK,XR(E)::P(D)
      • Refutation
        • P(d);XR(E)
    • Try
      • R(E);CHECK
      • Refutation
        • K(e);P_SPINS(f),S_FLIGHT
  • Actual
    • S(B);
    • Threat
      • S(B)
    • Vars
      • B(a);CHECK,N_GUARD::S(B),XB(a)
      • S(f);N_GUARD::R(E)
      • S(f);SBLOCK::P(D)
      • S(f);OGATE,SBLOCK::R1(G)
      • S(f);OGATE::PXS(f)=S
      • P(d);OGATE::P(C),XP(d)
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