MESON Chess Problem Database

Problem Display
PID: 163645 (7b/4N1B1/8/K4N1q/1Pk1P2R/8/n1B3R1/8 w - - 0 1)

Bakcsi, Gyorgy

idee & form, 1995

7b/4N1B1/8/K4N1q/1Pk1P2R/8/n1B3R1/8

#2

9 + 4

15601 Albrecht-Leiss-Degener Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Qd1
      • 2.Se3#
    • 1...Qe2
      • 2.Sd6#
    • 1...Qf3
      • 2.Sd6#
    • 1...Qg4
      • 2.Se3#
      • 2.Sd6#
    • 1...Qg6
      • 2.Se3#
    • 1...Qf7
      • 2.Se3#
      • 2.Sd6#
    • 1...Qe8
      • 2.Se3#
      • 2.Sd6#
    • 1...Qxh4
      • 2.Se3#
      • 2.Sd6#
    • 1...Qxf5+
      • 2.exf5#
    • 1...Qh7
      • 2.Se3#
      • 2.Sd6#
  • Tries
    • 1.Rg6?
      • threat
        • 2.Rc6#
      • 1...Qxf5+
        • 2.exf5#
      • 1...Qxg6
        • 2.Se3#
      • 1...Qh6
        • 2.Sd6#
      • 1...Sxb4!
    • 1.Rh3?
      • threat
        • 2.Bb3#
      • 1...Qxh3
        • 2.Sd6#
      • 1...Sxb4
        • 2.Rc3#
      • 1...Qd1
        • 2.Se3#
      • 1...Qf3
        • 2.Sd6#
      • 1...Sc1
        • 2.Rc3#
      • 1...Sc3
        • 2.Rxc3#
      • 1...Qxf5+!
  • Keys
    • 1.Rg3!
      • threat
        • 2.Bb3#
      • 1...Qxf5+
        • 2.exf5#
      • 1...Sxb4
        • 2.Rc3#
      • 1...Qd1
        • 2.Se3#
      • 1...Qf3
        • 2.Sd6#
      • 1...Sc1
        • 2.Rc3#
      • 1...Sc3
        • 2.Rxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • Q(c);N_PINS(G)::S(G)
    • Q(c);CHECK,OGATE,XS(G)::R(E)+P(D),XQ(c)
  • Tries
    • Try
      • R(B);
      • Threat
        • R(B)
      • Vars
        • Q(c);CHECK,OGATE,XS(G)::R(E)+P(D),XQ(c)
        • Q(c);N_PINS(G),XR(B)::S(G)
        • Q(c);N_PINS(G)::S(G)
      • Refutation
        • S(a);XP(C)
    • Try
      • R(E);
      • Threat
        • B(A)
      • Vars
        • Q(c);N_PINS(G),XR(E)::S(G)
        • S(a);N_GUARD,XP(C)::R1(E)
        • Q(c);N_PINS(G)::S(G)
        • S(a);N_GUARD::R1(E)
        • S(a);N_GUARD::R1(E),XS(a)
      • Refutation
        • Q(c);CHECK,XS(G)
  • Actual
    • R(B);
    • Threat
      • B(A)
    • Vars
      • Q(c);CHECK,OGATE,XS(G)::R(E)+P(D),XQ(c)
      • S(a);N_GUARD,XP(C)::R1(B)
      • Q(c);N_PINS(G)::S(G)
      • S(a);N_GUARD::R1(B)
      • S(a);N_GUARD::R1(B),XS(a)
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