MESON Chess Problem Database

Problem Display
PID: 22285 (7q/3N1B1p/6PR/4QNkn/R7/8/7b/3K4 w - - 0 1)

Nietvelt, Gustaaf Josephus

2nd Place, Gazette de Liege, 1930

7q/3N1B1p/6PR/4QNkn/R7/8/7b/3K4

#2

8 + 5

3098 FIDE Album (1914-1944) (I) 1971

SOLUTION

  • SOUND
  • Sets
    • 1...Sg3
      • 2.Qf4#
    • 1...Sg7
      • 2.Qf6#
    • 1...hxg6
      • 2.Rxg6#
  • Tries
    • 1.Sg3+?
      • 1...Qxe5
        • 2.Rxh5#
      • 1...Kxh6!
    • 1.Sg7+?
      • 1...Bxe5
        • 2.Rxh5#
      • 1...Kxh6!
  • Keys
    • 1.Rh4!
      • threat
        • 2.R6xh5#
      • 1...hxg6
        • 2.Rxg6#
      • 1...Sg3
        • 2.Qf4#
      • 1...Sf4
        • 2.Sg7#
      • 1...Sf6
        • 2.Sg3#
      • 1...Sg7
        • 2.Qf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(c);N_GUARD,S_CUTB(a)::QAB1(C)
    • S(c);N_GUARD,S_CUTQ(e)::QAB1(C)
    • P(d);OGATE,XP(E)::R1(F),XP(d)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • Q(e);XQ(C)::R1(F),XS(c)
      • Refutation
        • K(b);S_FLIGHT,XR(F)
    • Try
      • S(D);CHECK
      • Vars
        • B(a);XQ(C)::R1(F),XS(c)
      • Refutation
        • K(b);S_FLIGHT,XR(F)
  • Actual
    • R(B);
    • Threat
      • R1(F),XS(c)
    • Vars
      • P(d);OGATE,XP(E)::R1(F),XP(d)
      • S(c);N_GUARD,S_CUTB(a)::QAB1(C)
      • S(c);S_CUTB(a)::QAR(C)+S(D)
      • S(c);S_CUTQ(e)::QAR(C)+S(D)
      • S(c);N_GUARD,S_CUTQ(e)::QAB1(C)
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