MESON Chess Problem Database

Problem Display
PID: 202602 (5Q2/2B5/R1Nn4/3k4/8/2P5/4P3/1B2K3 w - - 0 1)

Olasz, Imre

Magyar Sakkvilag, 1923

5Q2/2B5/R1Nn4/3k4/8/2P5/4P3/1B2K3

#2

8 + 2

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sc4
      • 2.Sb4#
    • 1...Se4
      • 2.Ba2#
  • Tries
    • 1.Ba2+?
      • 1...Ke4
        • 2.Qf3#
      • 1...Sc4
        • 2.Qf5#
      • 1...Kc5!
    • 1.Bd3?
      • threat
        • 2.Qxd6#
      • 1...Kc5
        • 2.Qxd6#
      • 1...Sc4
        • 2.Sb4#
      • 1...Se4
        • 2.Sb4#
        • 2.Qf5#
      • 1...Sb5
        • 2.Sb4#
        • 2.Qf5#
      • 1...Sf5
        • 2.Sb4#
        • 2.Qxf5#
      • 1...Sb7
        • 2.Sb4#
        • 2.Qf5#
      • 1...Sf7
        • 2.Sb4#
      • 1...Sc8
        • 2.Sb4#
        • 2.Qf5#
      • 1...Se8
        • 2.Sb4#
        • 2.Qf5#
      • 1...Ke6!
  • Keys
    • 1.Se5!
      • threat
        • 2.Qxd6#
      • 1...Kc5
        • 2.Ra5#
      • 1...Kxe5
        • 2.Qxd6#
        • 2.Qf5#
      • 1...Ke6
        • 2.Qxd6#
      • 1...Sc4
        • 2.e4#
      • 1...Se4
        • 2.Ba2#
      • 1...Sb5
        • 2.e4#
      • 1...Sf5
        • 2.e4#
      • 1...Sb7
        • 2.e4#
      • 1...Sf7
        • 2.e4#
      • 1...Sc8
        • 2.e4#
      • 1...Se8
        • 2.e4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • S(b);SBLOCK::S(F)
    • S(b);N_GUARD,SBLOCK::B(A)
  • Tries
    • Try
      • B(A);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(H)
        • S(b);P_SPINS(b)::QAR2(H)
      • Refutation
        • K(a);P-FLIGHT,P_SPINS(b)
    • Try
      • B(A);
      • Threat
        • QAR1(H),XS(b)
      • Vars
        • K(a);P-FLIGHT,P_SPINS(b)::QAB1(H),XS(b)
        • S(b);::S(F)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(F);
    • Threat
      • QAR1(H),XS(b)
    • Vars
      • K(a);P-FLIGHT,P_SPINS(b)::R(E)
      • K(a);P_SPINS(b),S_FLIGHT::QAR1(H),XS(b)
      • S(b);N_GUARD::P(C)
      • S(b);N_GUARD,SBLOCK::B(A)
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