MESON Chess Problem Database

Problem Display
PID: 93786 (1K6/8/1N2p3/8/Q2p4/3k1BR1/2prnp2/3b4 w - - 0 1)

Jarosz, Oswald

Ceske listy sachove, 1898

1K6/8/1N2p3/8/Q2p4/3k1BR1/2prnp2/3b4

#2

5 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kc3
      • 2.Qa3#
    • 1...Sg1
      • 2.Qb3#
      • 2.Qa3#
    • 1...Sxg3
      • 2.Qb3#
      • 2.Qa3#
    • 1...Sf4
      • 2.Qb3#
      • 2.Qa3#
  • Tries
    • 1.Qb5+?
      • 1...Kc3
        • 2.Sa4#
      • 1...Ke3!
    • 1.Qa6+?
      • 1...Kc3
        • 2.Qa3#
      • 1...Ke3!
  • Keys
    • 1.Qa8!
      • threat
        • 2.Be4#
      • 1...Kc3
        • 2.Qa3#
      • 1...Ke3
        • 2.Qe4#
      • 1...Sxg3
        • 2.Qa3#
      • 1...Sc1
        • 2.Bxd1#
      • 1...Sg1
        • 2.Qa3#
      • 1...Sc3
        • 2.Bxd1#
      • 1...Sf4
        • 2.Bxd1#
        • 2.Qa3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • K(f);P-FLIGHT::QAR2(C)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(f);P-FLIGHT::S(D)
      • Refutation
        • K(f);P-FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(f);P-FLIGHT::QAR2(C)
      • Refutation
        • K(f);P-FLIGHT
  • Actual
    • Q(C);
    • Threat
      • R(B)+B(A),DCHECK
    • Vars
      • K(f);P-FLIGHT::QAR2(C)
      • K(f);P-FLIGHT::QAR1(C)
      • S(d);N_GUARD,XR(B)::QAR(C)
      • S(d);OGATE::R(B)+B(A),XB(a)
      • S(d);N_GUARD::QAR(C)
      • S(d);OGATE,SBLOCK::R(B)+B(A),XB(a)
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