MESON Chess Problem Database

Problem Display
PID: 152 (6Q1/1N4p1/2R2N1P/5k2/3P1n1p/5RbP/5p1p/2B2K1n w - - 0 1)

Jorgensen, Walther Martinus Johannes

Arbejder-Skak, 1950

6Q1/1N4p1/2R2N1P/5k2/3P1n1p/5RbP/5p1p/2B2K1n

#2

10 + 8

15593 170 Skakopgaver (Jorgensen) 1975
273 Mat Plus 1994

SOLUTION

  • SOUND
  • Sets
    • 1...gxf6
      • 2.Sd6#
    • 1...gxh6
      • 2.Qg4#
    • 1...g5
      • 2.Qh7#
    • 1...g6
      • 2.Qd5#
  • Tries
    • 1.Sg4?
      • threat
        • 2.Qd5#
      • 1...Kg5
        • 2.Qd5#
      • 1...Ke4!
    • 1.Sh5?
      • threat
        • 2.Qd5#
      • 1...Kg5
        • 2.Qd5#
      • 1...Ke4!
    • 1.Sd7?
      • threat
        • 2.Qd5#
      • 1...Kg5
        • 2.Qd5#
      • 1...Ke4!
    • 1.Se8?
      • threat
        • 2.Qd5#
      • 1...Kg5
        • 2.Qd5#
      • 1...Ke4!
    • 1.Sd6+?
      • 1...Kg5
        • 2.Qxg7#
      • 1...Kg6
        • 2.Qxg7#
      • 1...Kxf6!
    • 1.Rxf4+?
      • 1...Kg5
        • 2.Qxg7#
      • 1...Kg6
        • 2.Qxg7#
      • 1...Bxf4!
    • 1.Rc5+?
      • 1...Kg6
        • 2.Qxg7#
      • 1...Kxf6!
    • 1.Qf7?
      • threat
        • 2.Rc5#
      • 1...Kg5
        • 2.Se4#
        • 2.Sh7#
        • 2.Qh5#
      • 1...gxf6!
  • Keys
    • 1.Qe8!
      • 1...Kg5
        • 2.Qh5#
      • 1...gxf6
        • 2.Rc5#
      • 1...gxh6
        • 2.Qh5#
      • 1...g5
        • 2.Qe4#
      • 1...g6
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 4
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(h);SBLOCK,XS(G)::S(I)
    • P(h);OGATE,XP(H)::QAB1(J)
    • P(h);N_GUARD,SBLOCK::QAB(J)
    • P(h);SBLOCK::QAR2(J)
  • Tries
    • Try
      • S(G);
      • Threat
        • QAR2(J)
      • Vars
        • K(g);P-FLIGHT,P_SPINP(h)::QAR(J)
      • Refutation
        • K(g);N_SPINS(e),S_FLIGHT
    • Try
      • S(G);
      • Threat
        • QAR2(J)
      • Vars
        • K(g);P-FLIGHT,P_SPINP(h)::QAR(J)
      • Refutation
        • K(g);N_SPINS(e),S_FLIGHT
    • Try
      • S(G);
      • Threat
        • QAR2(J)
      • Vars
        • K(g);P-FLIGHT,P_SPINP(h)::QAR(J)
      • Refutation
        • K(g);N_SPINS(e),S_FLIGHT
    • Try
      • S(G);
      • Threat
        • QAR2(J)
      • Vars
        • K(g);P-FLIGHT,P_SPINP(h)::QAR(J)
      • Refutation
        • K(g);N_SPINS(e),S_FLIGHT
    • Try
      • S(I);CHECK
      • Vars
        • K(g);P-FLIGHT,P_SPINP(h)::QAR2(J),XP(h)
        • K(g);N_SPINS(e),P_SPINP(h),S_FLIGHT::QAR1(J),XP(h)
      • Refutation
        • K(g);P-FLIGHT,XS(G)
    • Try
      • R(C);CHECK,XS(e)
      • Vars
        • K(g);P-FLIGHT,P_SPINP(h)::QAR2(J),XP(h)
        • K(g);P_SPINP(h),S_FLIGHT::QAR1(J),XP(h)
      • Refutation
        • B(d);XR(C)
    • Try
      • R(F);CHECK
      • Vars
        • K(g);N_SPINS(e),P_SPINP(h),S_FLIGHT::QAR1(J),XP(h)
      • Refutation
        • K(g);P-FLIGHT,XS(G)
    • Try
      • Q(J);
      • Threat
        • R(F)
      • Refutation
        • P(h);P_SPINP(h),XS(G)
  • Actual
    • Q(J);
    • Vars
      • K(g);P-FLIGHT::QAR1(J)
      • P(h);SBLOCK,XS(G)::R(F)
      • P(h);N_GUARD,XP(H)::QAR2(J)
      • P(h);SBLOCK::QAB1(J)
      • P(h);SBLOCK::QAR1(J)
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