MESON Chess Problem Database

Problem Display
PID: 121531 (8/1pp5/1Bk5/p3p3/2NR4/3pQ3/8/5K2 w - - 0 1)

Drnek, Josef

Nove parizske mody, 1906

8/1pp5/1Bk5/p3p3/2NR4/3pQ3/8/5K2

#2

5 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Rxd3?
      • threat
        • 2.Qc5#
      • 1...cxb6
        • 2.Qxb6#
      • 1...Kb5!
    • 1.Rd8?
      • threat
        • 2.Qc5#
      • 1...cxb6
        • 2.Qxb6#
      • 1...Kb5!
  • Keys
    • 1.Sa3!
      • threat
        • 2.Qh6#
      • 1...Kxb6
        • 2.Rd6#
      • 1...exd4
        • 2.Qe6#
      • 1...cxb6
        • 2.Qc1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(D);XP(a)
      • Threat
        • QAR1(B)
      • Vars
        • P(f);OGATE,XB(E)::QAR1(B),XP(f)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • R(D);
      • Threat
        • QAR1(B)
      • Vars
        • P(f);OGATE,XB(E)::QAR1(B),XP(f)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • S(C);
    • Threat
      • QAR(B)
    • Vars
      • K(d);P-FLIGHT,XB(E)::QAB(B)+R(D),DCHECK
      • P(c);OGATE,XR(D)::QAR2(B)
      • P(f);SBLOCK,XB(E)::QAR(B)
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