MESON Chess Problem Database

Problem Display
PID: 96418 (7Q/K1p5/2p4P/1p3PNR/R2nqk2/4N1pB/3P2p1/Bb4b1 w - - 0 1)

Goldschmidt, Jakob

The Chess Problem, 1946

7Q/K1p5/2p4P/1p3PNR/R2nqk2/4N1pB/3P2p1/Bb4b1

#2

11 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qc2
      • 2.Sxg2#
    • 1...Qd3
      • 2.Sxg2#
    • 1...Qxf5
      • 2.Sxg2#
    • 1...Qe5
      • 2.Sxg2#
    • 1...Qe6
      • 2.Sxg2#
    • 1...Qe7
      • 2.Sxg2#
    • 1...Qe8
      • 2.Sxg2#
    • 1...Sc2
      • 2.Be5#
      • 2.Rxe4#
      • 2.Qe5#
    • 1...Se2
      • 2.Be5#
      • 2.Qe5#
    • 1...Sb3
      • 2.Be5#
      • 2.Qe5#
    • 1...Sf3
      • 2.Se6#
    • 1...Sxf5
      • 2.Be5#
      • 2.Qe5#
    • 1...Se6
      • 2.Be5#
      • 2.Qe5#
  • Tries
    • 1.Qxd4?
      • threat
        • 2.Sxg2#
        • 2.Qe5#
      • 1...Bxe3
        • 2.Qxe3#
        • 2.dxe3#
      • 1...bxa4
        • 2.Sxg2#
      • 1...b4
        • 2.Sxg2#
      • 1...Qxd4+!
    • 1.Qe5+?
      • 1...Qxe5
        • 2.Sxg2#
      • 1...Kxe5!
    • 1.Qf6?
      • threat
        • 2.Rh4#
      • 1...Sf3
        • 2.Se6#
      • 1...Qf3!
  • Keys
    • 1.Qg7!
      • threat
        • 2.Rh4#
      • 1...Qxf5
        • 2.Sxg2#
      • 1...Sxf5
        • 2.Be5#
        • 2.Qe5#
      • 1...Qf3
        • 2.Qxc7#
      • 1...Sf3
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • Q(f);N_GUARD,P_SPINS(e)::S(C),XP(c)
    • Q(f);N_GUARD,P_SPINS(e),XP(F)::S(C),XP(c)
    • S(e);N_GUARD,P_PINS(C),P_SPINQ(f),SBLOCK::S(G)
  • Tries
    • Try
      • Q(K);P_PINQ(f),XS(e)
      • Threat
        • DUALS(2)
      • Vars
        • P(h);XR(E)::S(C),XP(c)
        • P(h);::S(C),XP(c)
      • Refutation
        • Q(f);CHECK,XQ(K)
    • Try
      • Q(K);CHECK
      • Vars
        • Q(f);P_SPINS(e),SBLOCK,XQ(K)::S(C),XP(c)
      • Refutation
        • K(g);P_SPINS(e),S_FLIGHT,XQ(K)
    • Try
      • Q(K);
      • Threat
        • R(H)
      • Vars
        • S(e);N_GUARD,P_PINS(C),P_SPINQ(f),SBLOCK::S(G)
      • Refutation
        • Q(f);P_SPINS(e)
  • Actual
    • Q(K);
    • Threat
      • R(H)
    • Vars
      • Q(f);N_GUARD,P_SPINS(e),XP(F)::S(C),XP(c)
      • Q(f);N_GUARD,P_SPINS(e)::QAB(K),XP(j)
      • S(e);N_GUARD,P_PINS(C),P_SPINQ(f),SBLOCK::S(G)
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