MESON Chess Problem Database

Problem Display
PID: 6705 (1RnN2b1/2n4p/1P6/1PkP2p1/8/P2K2B1/3N1PBQ/1R6 w - - 0 1)

Apro, Laszlo

1st HM., Wittenberger Tageblatt, 1932

1RnN2b1/2n4p/1P6/1PkP2p1/8/P2K2B1/3N1PBQ/1R6

#2

13 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Sxb5
      • 2.Sb3#
    • 1...Sxd5
      • 2.Se4#
    • 1...Sxb6
      • 2.Sb7#
      • 2.Bd6#
    • 1...Sd6
      • 2.Bxd6#
    • 1...Sa7
      • 2.Bd6#
    • 1...Se7
      • 2.Bd6#
  • Tries
    • 1.Sc4?
      • threat
        • 2.Sb7#
      • 1...Sd6
        • 2.Bxd6#
      • 1...Bxd5!
    • 1.Be5?
      • threat
        • 2.Bd4#
      • 1...Sxb5
        • 2.Sb3#
      • 1...Se6!
    • 1.Bxc7?
      • threat
        • 2.Sb7#
      • 1...Sd6
        • 2.Bxd6#
        • 2.Qxd6#
      • 1...Bxd5!
    • 1.bxc7?
      • threat
        • 2.Sb3#
        • 2.Rc1#
      • 1...Sb6
        • 2.Sb7#
        • 2.Bd6#
      • 1...Sd6
        • 2.Sb3#
        • 2.Bxd6#
      • 1...Bxd5!
  • Keys
    • 1.Qg1!
      • threat
        • 2.Qc1#
      • 1...Bxd5
        • 2.f3#
      • 1...Sxb5
        • 2.Sb3#
      • 1...Sxd5
        • 2.Se4#
      • 1...Sxb6
        • 2.Sb7#
      • 1...Sd6
        • 2.f4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • S(c);SBLOCK,XP(I)::S(B)
    • S(c);SBLOCK,XP(J)::S(B)
    • S(e);N_GUARD::B(H),XS(e)
    • S(e);N_GUARD::B(H)
  • Tries
    • Try
      • S(B);
      • Threat
        • S(M)
      • Vars
        • S(e);N_GUARD::B(H),XS(e)
      • Refutation
        • B(f);XP(J)
    • Try
      • B(H);
      • Threat
        • B(H)
      • Vars
        • S(c);SBLOCK,XP(I)::S(B)
      • Refutation
        • S(c);
    • Try
      • B(H);XS(c)
      • Threat
        • S(M)
      • Refutation
        • B(f);XP(J)
    • Try
      • P(K);XS(c)
      • Threat
        • DUALS(2)
      • Refutation
        • B(f);XP(J)
  • Actual
    • Q(E);
    • Threat
      • QAR(E)
    • Vars
      • B(f);SBLOCK,XP(J)::QAB(E)+P(C)
      • S(c);SBLOCK,XP(I)::S(B)
      • S(c);SBLOCK,XP(J)::S(B)
      • S(e);SBLOCK,XP(K)::S(M)
      • S(e);SBLOCK::QAB(E)+P(C)
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