MESON Chess Problem Database

Problem Display
PID: 7578 (4r3/8/8/2pN4/2R5/1P1kP3/4n3/2n1K1Q1 w - - 0 1)

Shire, David J

Slovensky Dennik, 1991

4r3/8/8/2pN4/2R5/1P1kP3/4n3/2n1K1Q1

#2

6 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe3
      • 2.Qxe3#
    • 1...Ra8
      • 2.Qg6#
    • 1...Rb8
      • 2.Qg6#
    • 1...Rc8
      • 2.Qg6#
    • 1...Rd8
      • 2.Qg6#
    • 1...Rh8
      • 2.Qg6#
    • 1...Sg3
      • 2.Sf4#
    • 1...Sf4
      • 2.Sxf4#
  • Keys
    • 1.Qg6+!
      • 1...Re4
        • 2.Qxe4#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 8
  • Sets
    • R(e);OGATE,XP(D)::QAR1(B),XR(e)
    • R(e);N_GUARD::QAB(B)
    • S(b);N_GUARD,P_PINP(D)::S(F)
    • S(b);N_GUARD,P_PINP(D)::S(F),XS(b)
  • Actual
    • Q(B);CHECK
    • Vars
      • R(e);N_GUARD,P_SPINR(e)::QAB1(B),XR(e)
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