MESON Chess Problem Database

Problem Display
PID: 219119 (8/8/8/8/6Q1/1N3q2/5R2/3knK2 w - - 0 1)

Stroblers, Regine

Deutsche Schachzeitung, 1988

8/8/8/8/6Q1/1N3q2/5R2/3knK2

#2

4 + 3

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qe2+
      • 2.Qxe2#
    • 1...Qxg4
      • 2.Rd2#
    • 1...Sc2
      • 2.Qxf3#
    • 1...Sg2
      • 2.Qxf3#
    • 1...Sd3
      • 2.Qxf3#
  • Keys
    • 1.Qh5!
      • 1...Qe2+
        • 2.Qxe2#
      • 1...Qxh5
        • 2.Rd2#
      • 1...Qg4
        • 2.Rd2#
      • 1...Sc2
        • 2.Qxf3#
      • 1...Sg2
        • 2.Qxf3#
      • 1...Sd3
        • 2.Qxf3#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • Q(c);CHECK,N_PINR(B),OGATE::QAB1(D),XQ(c)
    • Q(c);N_PINR(B),N_SPINQ(c),XQ(D)::R1(B)
    • S(b);N_GUARD::QAB(D),XQ(c)
  • Actual
    • Q(D);
    • Vars
      • Q(c);CHECK,N_PINR(B),OGATE::QAB1(D),XQ(c)
      • Q(c);N_PINR(B),N_SPINQ(c),XQ(D)::R1(B)
      • Q(c);N_PINR(B)::R1(B)
      • S(b);N_GUARD::QAB(D),XQ(c)
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