MESON Chess Problem Database

Problem Display
PID: 261109 (7Q/3B4/2K5/R1n2NP1/4pk2/6r1/1n1bRNP1/B3r3 w - - 0 1)

Felber, Stefan

Neue Zurcher Zeitung, 2015

7Q/3B4/2K5/R1n2NP1/4pk2/6r1/1n1bRNP1/B3r3

#2

10 + 7

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kxg5
      • 2.Qh6#
    • 1...Rg4
      • 2.Sh3#
    • 1...Rxg5
      • 2.Qb8#
  • Tries
    • 1.Sh3+?
      • 1...Kg4
        • 2.Se3#
        • 2.Qh4#
      • 1...Rxh3!
    • 1.Qh4+?
      • 1...Ke5
        • 2.Rxc5#
        • 2.Qxe4#
      • 1...Rg4!
  • Keys
    • 1.Qh2!
      • threat
        • 2.Qxg3#
      • 1...Ke5
        • 2.Sd3#
      • 1...Kxg5
        • 2.Qh6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • K(f);OGATEB,S_FLIGHT,XP(G)::QAB1(J)
    • R(d);N_GUARD,SBLOCK::S(C)
    • R(d);SBLOCK,XP(G)::QAB(J)
  • Tries
    • Try
      • S(C);CHECK
      • Refutation
        • R(d);XS(C)
    • Try
      • Q(J);CHECK
      • Refutation
        • R(d);P_SPINR(d)
  • Actual
    • Q(J);P_PINR(d)
    • Threat
      • QAB1(J),XR(d)
    • Vars
      • K(f);N_GUARD,P_SPINP(e),P_SPINS(b),S_CUTS(g),S_FLIGHT::S(C)
      • K(f);N_SPINR(d),OGATEB,S_FLIGHT,XP(G)::QAB1(J)
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