MESON Chess Problem Database

Problem Display
PID: 193722 (8/2K4p/2R5/1Q3P2/4kBP1/2PN3r/4p3/8 w - - 0 1)

Ort, Josef

Narodni listy, 1916

8/2K4p/2R5/1Q3P2/4kBP1/2PN3r/4p3/8

#2

8 + 4

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rf3
      • 2.Re6#
      • 2.Qc4#
  • Tries
    • 1.Se1?
      • threat
        • 2.Rc4#
        • 2.Qc4#
        • 2.Qe5#
      • 1...Rxc3
        • 2.Qe5#
      • 1...Rd3
        • 2.Qe5#
      • 1...Kxf4!
    • 1.Qb4+?
      • 1...Kxd3
        • 2.Qb1#
      • 1...Kd5
        • 2.Rc5#
        • 2.Rd6#
        • 2.Qc4#
        • 2.Qd4#
      • 1...Kf3!
  • Keys
    • 1.Qb7!
      • threat
        • 2.Rd6#
      • 1...Kxd3
        • 2.Qb1#
      • 1...Kf3
        • 2.Rg6#
      • 1...Kd5
        • 2.Rc5#
      • 1...Rxd3
        • 2.Rc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Threat
        • DUALS(3)
      • Vars
        • R(b);P_PINR(G),XP(A)::QAR1(E)
        • R(b);::QAR1(E)
      • Refutation
        • K(c);P-FLIGHT,XB(C)
    • Try
      • Q(E);CHECK
      • Vars
        • K(c);OGATEB,S_FLIGHT,XS(B)::QAB(E)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • Q(E);
    • Threat
      • QAB(E)+R(G)
    • Vars
      • K(c);OGATEB,S_FLIGHT,XS(B)::QAB(E)
      • K(c);S_FLIGHT::QAB(E)+R(G)
      • K(c);S_FLIGHT::QAB(E)+R(G),DCHECK
      • R(b);SBLOCK,XS(B)::QAB(E)+R(G),DCHECK
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