MESON Chess Problem Database

Problem Display
PID: 247371 (2B4Q/2P5/3pNRp1/3P2P1/1p2k1N1/1Pnp2pP/3P2K1/B7 w - - 0 1)

Piatesi, Antonio

Stella Polaris, 1967

2B4Q/2P5/3pNRp1/3P2P1/1p2k1N1/1Pnp2pP/3P2K1/B7

#2

13 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd5
      • 2.Bb7#
  • Tries
    • 1.Bxc3?
      • 1...Kxd5
        • 2.Bb7#
      • 1...bxc3!
    • 1.Rf1?
      • threat
        • 2.Qd4#
      • 1...Se2
        • 2.Sf6#
      • 1...Sb5
        • 2.Sf6#
      • 1...Kxd5!
    • 1.Rf3?
      • threat
        • 2.Qd4#
      • 1...Se2
        • 2.Sf6#
      • 1...Sb5
        • 2.Sf6#
      • 1...Kxd5!
    • 1.Qh4?
      • 1...Kxd5
        • 2.Bb7#
      • 1...Sxd5
        • 2.Sf2#
      • 1...Sb1
        • 2.Se3#
      • 1...Sd1
        • 2.Se3#
      • 1...Sa2
        • 2.Se3#
      • 1...Sa4
        • 2.Se3#
      • 1...Sb5
        • 2.Se3#
      • 1...Se2!
  • Keys
    • 1.Qe8!
      • 1...Kxd5
        • 2.Bb7#
      • 1...Sxd5
        • 2.Sc5#
        • 2.Qxg6#
      • 1...Sb1
        • 2.Sf4#
      • 1...Sd1
        • 2.Sf4#
      • 1...Sa2
        • 2.Sf4#
      • 1...Se2
        • 2.Sf4#
      • 1...Sa4
        • 2.Sf4#
      • 1...Sb5
        • 2.Sf4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • K(e);OGATEB,S_FLIGHT,XP(G)::B(L)
  • Tries
    • Try
      • B(A);XS(a)
      • Vars
        • K(e);OGATEB,S_FLIGHT,XP(G)::B(L)
      • Refutation
        • P(d);XB(A)
    • Try
      • R(J);
      • Threat
        • QAR1(M)
      • Vars
        • S(a);::S(F)
      • Refutation
        • K(e);S_FLIGHT,XP(G)
    • Try
      • R(J);
      • Threat
        • QAR1(M)
      • Vars
        • S(a);::S(F)
      • Refutation
        • K(e);S_FLIGHT,XP(G)
    • Try
      • Q(M);
      • Vars
        • K(e);OGATEB,S_FLIGHT,XP(G)::B(L)
        • S(a);SBLOCK,XP(G)::QAR(M)+S(F),DCHECK
        • S(a);::QAR(M)+S(F)
      • Refutation
        • S(a);
  • Actual
    • Q(M);
    • Vars
      • K(e);OGATEB,S_FLIGHT,XP(G)::B(L)
      • S(a);::QAR(M)+S(I)
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