MESON Chess Problem Database

Problem Display
PID: 174802 (5R2/7p/2Kpp2P/R2N2PQ/1B2k1Nn/2P1p3/2P3n1/8 w - - 0 1)

Barth, Michael

1/2 Prize, Kaspiy, 2006

5R2/7p/2Kpp2P/R2N2PQ/1B2k1Nn/2P1p3/2P3n1/8

#2

11 + 7

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Se1
      • 2.Rf4#
    • 1...Sf4
      • 2.Rxf4#
    • 1...exd5
      • 2.Qe8#
  • Tries
    • 1.Sf2+?
      • 1...Ke5
        • 2.Bxd6#
      • 1...exf2!
    • 1.Sgf6+?
      • 1...Kf5
        • 2.g6#
      • 1...Ke5!
    • 1.Rf1?
      • threat
        • 2.Sdf6#
      • 1...exd5
        • 2.Qe8#
      • 1...Sf3!
    • 1.g6?
      • threat
        • 2.Sgf6#
      • 1...exd5
        • 2.Qxd5#
      • 1...Sf5!
  • Keys
    • 1.Bxd6!
      • threat
        • 2.Ra4#
      • 1...exd5
        • 2.Qe8#
      • 1...Sf4
        • 2.Rxf4#
      • 1...Sf5
        • 2.Sgf6#
      • 1...Sf3
        • 2.Sdf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • S(a);N_GUARD::R1(K)
    • S(a);N_GUARD::R1(K),XS(a)
    • P(f);OGATEB,XS(F)::QAR(H)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(c);P-FLIGHT::B(C),XP(e)
      • Refutation
        • P(b);XS(D)
    • Try
      • S(D);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR(H)+P(G)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • R(K);
      • Threat
        • S(F)
      • Vars
        • P(f);OGATEB,XS(F)::QAR(H)
      • Refutation
        • S(d);
    • Try
      • P(G);
      • Threat
        • S(D)
      • Vars
        • P(f);OGATE,XS(F)::QAB1(H),XP(f)
      • Refutation
        • S(d);
  • Actual
    • B(C);XP(e)
    • Threat
      • R(E)
    • Vars
      • P(f);OGATEB,XS(F)::QAR(H)
      • S(a);N_GUARD::R1(K),XS(a)
      • S(d);SBLOCK::S(D)
      • S(d);SBLOCK::S(F)
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