MESON Chess Problem Database

Problem Display
PID: 124426 (8/2n5/5RK1/r3k3/8/3Q4/4P3/8 w - - 0 1)

Vogel, Peter

Source?, 0000

8/2n5/5RK1/r3k3/8/3Q4/4P3/8

#2

4 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.Qe3#
    • 1...Se6
      • 2.Rf5#
  • Tries
    • 1.Kf7?
      • threat
        • 2.Rf5#
      • 1...Rd5
        • 2.Qe3#
      • 1...Sd5!
  • Keys
    • 1.e3!
      • threat
        • 2.Qf5#
        • 2.Qd4#
      • 1...Ra4
        • 2.Qf5#
      • 1...Rd5
        • 2.Qf5#
      • 1...Sb5
        • 2.Qf5#
      • 1...Se6
        • 2.Rf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(a);SBLOCK::QAR2(B)
    • S(c);SBLOCK::R1(C)
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Threat
        • R1(C)
      • Vars
        • R(a);SBLOCK::QAR2(B)
      • Refutation
        • S(c);
  • Actual
    • P(A);
    • Threat
      • DUALS(2)
    • Vars
      • R(a);::QAR1(B)
      • R(a);SBLOCK::QAR1(B)
      • S(c);::QAR1(B)
      • S(c);SBLOCK::R1(C)
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