MESON Chess Problem Database

Problem Display
PID: 232558 (7Q/b5rB/4r3/3b1N2/5P1P/K6R/4kP1N/R3B3 w - - 0 1)

Gruber, Lutz-Dieter

Freie Presse, 1989

7Q/b5rB/4r3/3b1N2/5P1P/K6R/4kP1N/R3B3

#2

11 + 5

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rb6
      • 2.Sd4#
      • 2.Re3#
    • 1...Rg1
      • 2.Qb2#
    • 1...Rg2
      • 2.Qb2#
    • 1...Rg3+
      • 2.Sxg3#
    • 1...Rg4
      • 2.Qb2#
    • 1...Rg5
      • 2.Qb2#
    • 1...Rg6
      • 2.Qb2#
    • 1...Rb7
      • 2.Sg3#
    • 1...Rc7
      • 2.Sg3#
    • 1...Rd7
      • 2.Sg3#
      • 2.Qb2#
    • 1...Re7
      • 2.Sg3#
      • 2.Qb2#
    • 1...Rf7
      • 2.Sg3#
      • 2.Qb2#
    • 1...Rxh7
      • 2.Qb2#
    • 1...Rg8
      • 2.Qb2#
    • 1...Bd4
      • 2.Sxd4#
    • 1...Bb8
      • 2.Sd4#
  • Keys
    • 1.Sd4+!
      • 1...Bxd4
        • 2.Bd3#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 11
  • Sets
    • R(e);OGATE::QAR(K)
    • R(e);CHECK,N_GUARD::S(I),XR(e)
    • R(e);N_GUARD::S(I)
    • R(e);OGATE,XB(J)::QAR(K)
    • B(d);N_GUARD::S(I),XB(d)
    • B(d);N_GUARD::S(I)
  • Actual
    • S(I);CHECK
    • Vars
      • B(d);XS(I)::B(J)
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