MESON Chess Problem Database

Problem Display
PID: 16745 (nB6/3p4/1pQ1B3/1P6/5rNp/5Nkp/4P2R/2K5 w - - 0 1)

Ekstrom, Sven Johan Adrian

1st HM., Tidskrift for Schack, 1942

nB6/3p4/1pQ1B3/1P6/5rNp/5Nkp/4P2R/2K5

#2

9 + 7

102 Probleemblad 1979
5395 Schach fur Nussknacker 1994

SOLUTION

  • SOUND
  • Tries
    • 1.Sg1?
      • threat
        • 2.Rxh3#
        • 2.Qf3#
        • 2.Qc3#
      • 1...dxe6
        • 2.Qf3#
      • 1...Sc7
        • 2.Rxh3#
      • 1...d5
        • 2.Qc3#
      • 1...d6
        • 2.Rxh3#
      • 1...dxc6!
    • 1.Sf2?
      • threat
        • 2.Sh1#
        • 2.Se4#
      • 1...Sc7
        • 2.Sh1#
      • 1...d5
        • 2.Sh1#
      • 1...d6
        • 2.Sh1#
      • 1...dxe6!
    • 1.Sf6?
      • threat
        • 2.Se4#
        • 2.Sh5#
      • 1...Sc7
        • 2.Sh5#
      • 1...d5
        • 2.Sh5#
      • 1...d6
        • 2.Sh5#
      • 1...dxe6!
    • 1.Rh1?
      • threat
        • 2.Rg1#
      • 1...Kg2
        • 2.Rg1#
      • 1...h2!
    • 1.Qc3?
      • threat
        • 2.Se1#
        • 2.Sg1#
        • 2.Sd2#
        • 2.Sd4#
        • 2.Sg5#
        • 2.Qe1#
      • 1...Sc7
        • 2.Qe1#
      • 1...d6
        • 2.Qe1#
      • 1...dxe6!
    • 1.Qc5?
      • threat
        • 2.Qg1#
        • 2.Qf2#
      • 1...dxe6
        • 2.Qg1#
      • 1...bxc5!
    • 1.Qxb6?
      • threat
        • 2.Qg1#
        • 2.Qf2#
      • 1...dxe6
        • 2.Qg1#
      • 1...Sxb6!
  • Keys
    • 1.Sg5!
      • threat
        • 2.Se4#
        • 2.Rxh3#
        • 2.Qf3#
        • 2.Qc3#
      • 1...dxc6
        • 2.Se4#
      • 1...dxe6
        • 2.Qf3#
      • 1...Sc7
        • 2.Rxh3#
      • 1...d5
        • 2.Qc3#
      • 1...d6
        • 2.Rxh3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);
      • Threat
        • DUALS(3)
      • Vars
        • P(f);XB(H)::QAR1(G)
        • S(g);N_SPINR(c)::R1(C),XP(b)
        • P(f);::QAR(G)
        • P(f);N_SPINR(c)::R1(C),XP(b)
      • Refutation
        • P(f);XQ(G)
    • Try
      • S(E);
      • Threat
        • DUALS(2)
      • Vars
        • S(g);N_SPINR(c)::S(E)
        • P(f);::S(E)
        • P(f);N_SPINR(c)::S(E)
      • Refutation
        • P(f);XB(H)
    • Try
      • S(E);
      • Threat
        • DUALS(2)
      • Vars
        • S(g);N_SPINR(c)::S(E)
        • P(f);::S(E)
        • P(f);N_SPINR(c)::S(E)
      • Refutation
        • P(f);XB(H)
    • Try
      • R(C);
      • Threat
        • R(C)
      • Vars
        • K(a);N_SPINR(c),P-FLIGHT::R1(C)
      • Refutation
        • P(b);
    • Try
      • Q(G);
      • Threat
        • DUALS(6)
      • Vars
        • S(g);N_SPINR(c)::QAB(G)
        • P(f);N_SPINR(c)::QAB(G)
      • Refutation
        • P(f);XB(H)
    • Try
      • Q(G);
      • Threat
        • DUALS(2)
      • Vars
        • P(f);XB(H)::QAR2(G)
      • Refutation
        • P(e);XQ(G)
    • Try
      • Q(G);XP(e)
      • Threat
        • DUALS(2)
      • Vars
        • P(f);XB(H)::QAR2(G)
      • Refutation
        • S(g);XQ(G)
  • Actual
    • S(D);
    • Threat
      • DUALS(4)
    • Vars
      • P(f);XQ(G)::S(D)
      • P(f);XB(H)::QAR1(G)
      • S(g);N_SPINR(c)::R1(C),XP(b)
      • P(f);::QAR(G)
      • P(f);N_SPINR(c)::R1(C),XP(b)
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