MESON Chess Problem Database

Problem Display
PID: 107785 (8/3n2r1/3p2B1/KR1P4/2kP2R1/2pN4/b1PrP1N1/5n1q w - - 0 1)

Brabec, Juraj

Postsjakk, 1965

8/3n2r1/3p2B1/KR1P4/2kP2R1/2pN4/b1PrP1N1/5n1q

#2

10 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd3
      • 2.Bxd3#
      • 2.cxd3#
      • 2.exd3#
    • 1...Bb3
      • 2.cxb3#
    • 1...Sh2
      • 2.Se3#
    • 1...Se3
      • 2.Sxe3#
    • 1...Sg3
      • 2.Se3#
    • 1...Se5
      • 2.dxe5#
  • Tries
    • 1.Sgf4?
      • threat
        • 2.Rb4#
      • 1...Kxd4
        • 2.Sg2#
      • 1...Qxd5!
    • 1.Sdf4?
      • threat
        • 2.Rb4#
      • 1...Kxd4
        • 2.Sd3#
      • 1...Rxd4!
    • 1.Rg5?
      • threat
        • 2.Rb4#
      • 1...Kxd4
        • 2.Rg4#
      • 1...Se5!
    • 1.e4?
      • threat
        • 2.Rb4#
      • 1...Kxd4
        • 2.e5#
      • 1...Rxc2!
  • Keys
    • 1.Be4!
      • threat
        • 2.Rb4#
      • 1...Kxd4
        • 2.Bg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • B(c);OGATE::P(A),XB(c)
    • S(a);N_GUARD::S(C)
    • S(a);N_GUARD::S(C),XS(a)
    • S(h);OGATE::R(F)+P(E),XS(h)
  • Tries
    • Try
      • S(C);
      • Threat
        • R1(H)
      • Vars
        • K(f);P-FLIGHT,XP(E)::R(F)+S(C)
      • Refutation
        • Q(b);P_PINR(H),XP(I)
    • Try
      • S(D);
      • Threat
        • R1(H)
      • Vars
        • K(f);P-FLIGHT,XP(E)::R(F)+S(D)
      • Refutation
        • R(d);XP(E)
    • Try
      • R(F);
      • Threat
        • R1(H)
      • Vars
        • K(f);OGATEB,P-FLIGHT,XP(E)::R(F)
      • Refutation
        • S(h);
    • Try
      • P(B);
      • Threat
        • R1(H)
      • Vars
        • K(f);P-FLIGHT,XP(E)::R(F)+P(B)
      • Refutation
        • R(d);XP(A)
  • Actual
    • B(J);
    • Threat
      • R1(H)
    • Vars
      • K(f);OGATEB,P-FLIGHT,XP(E)::R(F)+B(J)
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