MESON Chess Problem Database

Problem Display
PID: 97456 (K4R2/4b2q/p3P1B1/2R1Pnp1/3Pk3/1N1r1bB1/r1Qp4/5N2 w - - 0 1)

Bakcsi, Gyorgy

US Problem Bulletin, 1990

K4R2/4b2q/p3P1B1/2R1Pnp1/3Pk3/1N1r1bB1/r1Qp4/5N2

#2

11 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qg8
      • 2.Bxf5#
    • 1...Qh1
      • 2.Bxf5#
    • 1...Qh2
      • 2.Bxf5#
    • 1...Qh4
      • 2.Bxf5#
    • 1...Qh5
      • 2.Bxf5#
    • 1...Qh6
      • 2.Bxf5#
    • 1...Qg7
      • 2.Bxf5#
    • 1...Qh8
      • 2.Bxf5#
  • Tries
    • 1.Qc4?
      • threat
        • 2.Qd5#
      • 1...Rxb3
        • 2.d5#
      • 1...Rxd4
        • 2.Qxd4#
      • 1...Bxc5
        • 2.Sxc5#
      • 1...Re3
        • 2.d5#
      • 1...Rc3!
  • Keys
    • 1.Be8!
      • threat
        • 2.Bc6#
      • 1...Sxd4
        • 2.Sbxd2#
      • 1...Se3
        • 2.Sfxd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • Q(j);N_GUARD,P_PINR(K)::B(I),XS(f)
    • Q(j);N_GUARD::B(I),XS(f)
  • Tries
    • Try
      • Q(B);N_PINR(c)
      • Threat
        • QAB1(B)
      • Vars
        • R(c);N_GUARD,XS(C)::QAR(B)+P(E)
        • R(c);OGATE,P_SPINR(c),XP(E)::QAR1(B),XR(c)
        • B(i);XR(F)::S(C),XB(i)
        • R(c);N_GUARD::QAR(B)+P(E)
      • Refutation
        • R(c);
  • Actual
    • B(I);N_PINS(f)
    • Threat
      • B(I)
    • Vars
      • S(f);SBLOCK,XP(E)::S(C),XP(b)
      • S(f);SBLOCK::S(A),XP(b)
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