MESON Chess Problem Database

Problem Display
PID: 227050 (1brR4/3p1r1b/2p5/2NnN2R/1B1k4/2pp2Qn/B5PK/8 w - - 0 1)

Kummer, Konrad

2nd Prize, Schweizerische Arbeiter Schach-Kalendar TT, 1946

1brR4/3p1r1b/2p5/2NnN2R/1B1k4/2pp2Qn/B5PK/8

#2

9 + 11

15257 Kunstwerke auf 64 Feldern (1922-1966) (Ott, Kummer, Schudel) 1968

SOLUTION

  • SOUND
  • Sets
    • 1...Be4
      • 2.Sb3#
    • 1...Bg8
      • 2.Qxd3#
    • 1...Bxe5
      • 2.Qxe5#
    • 1...Sc7
      • 2.Sxc6#
  • Tries
    • 1.Se6+?
      • 1...Ke4
        • 2.Qxd3#
      • 1...dxe6!
    • 1.Sxc6+?
      • 1...Rxc6
        • 2.Rxd5#
      • 1...dxc6!
  • Keys
    • 1.Qe1!
      • threat
        • 2.Sb3#
      • 1...Bxe5+
        • 2.Qxe5#
      • 1...Sxb4
        • 2.Se6#
      • 1...Se3
        • 2.Qxc3#
      • 1...Sdf4
        • 2.Sf3#
      • 1...Sb6
        • 2.Se6#
      • 1...Sf6
        • 2.Se6#
      • 1...Sc7
        • 2.Sxc6#
      • 1...Se7
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 2
  • Sets
    • B(i);SBLOCK::S(F)
    • B(i);N_GUARD::QAR1(D),XP(b)
    • B(j);OGATE,P_PINQ(D),XS(G)::QAB1(D),XB(j)
    • S(e);P_SPINP(g),S_CUTR(k)::S(G),XP(f)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(d);P-FLIGHT::QAB1(D),XP(b)
      • Refutation
        • P(g);P_SPINS(e),XS(F)
    • Try
      • S(G);CHECK,P_SPINQ(D),XP(f)
      • Vars
        • R(k);XS(G)::R1(H),XS(e)
      • Refutation
        • P(g);P_SPINS(e),XS(G)
  • Actual
    • Q(D);P_SPINS(G)
    • Threat
      • S(F)
    • Vars
      • B(j);CHECK,OGATE,XS(G)::QAB1(D),XB(j)
      • S(e);P_SPINP(g),XB(E)::S(F)
      • S(e);N_GUARD,P_SPINP(g),SBLOCK::QAB1(D),XP(a)
      • S(e);N_PINS(G),P_SPINP(g)::S(G)
      • S(e);P_SPINP(g)::S(F)
      • S(e);N_PINS(G),P_SPINP(g)::S(G),XP(f)
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