MESON Chess Problem Database

Problem Display
PID: 70162 (1B3R1K/3N2N1/3r2Q1/2q2n2/R2b1kn1/6p1/3PP1B1/1b6 w - - 0 1)

Grasemann, Herbert

Chess, 1950

1B3R1K/3N2N1/3r2Q1/2q2n2/R2b1kn1/6p1/3PP1B1/1b6

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Sf2
      • 2.e3#
    • 1...Sh2
      • 2.e3#
    • 1...Se5
      • 2.Sh5#
      • 2.e3#
    • 1...Sf6
      • 2.Se6#
    • 1...Sh6
      • 2.e3#
  • Tries
    • 1.Kh7?
      • threat
        • 2.Sh5#
        • 2.Se6#
      • 1...Qc4
        • 2.Sh5#
      • 1...Qd5
        • 2.Sh5#
      • 1...Qe5
        • 2.Sh5#
      • 1...Qc7
        • 2.Sh5#
      • 1...Ba2
        • 2.Sh5#
      • 1...Se5
        • 2.Sh5#
        • 2.e3#
      • 1...Sf6+!
    • 1.Rxd4+?
      • 1...Be4
        • 2.Sh5#
        • 2.Se6#
        • 2.Rxe4#
      • 1...Qxd4!
    • 1.Rf6?
      • threat
        • 2.Sh5#
        • 2.Se6#
      • 1...Sxf6
        • 2.Se6#
      • 1...Qc4
        • 2.Sh5#
      • 1...Qd5
        • 2.Sh5#
      • 1...Qe5
        • 2.Sh5#
      • 1...Qc7
        • 2.Sh5#
      • 1...Ba2
        • 2.Sh5#
      • 1...Se5
        • 2.Sh5#
        • 2.e3#
      • 1...Qc8+!
  • Keys
    • 1.Bf3!
      • threat
        • 2.Qxg4#
      • 1...Sf2
        • 2.Qh6#
      • 1...Sh2
        • 2.Qh6#
      • 1...Se3
        • 2.Qh6#
      • 1...Se5
        • 2.Sh5#
      • 1...Sf6
        • 2.Se6#
      • 1...Sh6
        • 2.Qxh6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(e);N_GUARD::P(B)
    • S(e);N_PINS(G),N_SPINS(g)::S(G)
  • Tries
    • Try
      • K(J);N_SPINS(G),P-FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • Q(f);N_SPINB(c)::S(G)
        • Q(f);::S(G)
        • Q(f);N_SPINR(h)::S(G)
        • B(a);::S(G)
      • Refutation
        • S(e);CHECK,N_SPINS(g)
    • Try
      • R(D);CHECK,N_SPINS(G),XB(c)
      • Refutation
        • Q(f);P_PINS(G),XR(D)
    • Try
      • R(I);N_SPINS(G)
      • Threat
        • DUALS(2)
      • Vars
        • S(e);N_SPINS(g),XR(I)::S(G)
        • Q(f);N_SPINB(c)::S(G)
        • Q(f);::S(G)
        • Q(f);N_SPINR(h)::S(G)
        • B(a);::S(G)
      • Refutation
        • Q(f);CHECK
  • Actual
    • B(C);
    • Threat
      • QAR1(E),XS(e)
    • Vars
      • S(e);N_GUARD::QAB(E)
      • S(e);N_PINS(G),N_SPINR(h)::S(G)
      • S(e);N_PINS(G),N_SPINS(g)::S(G)
      • S(e);N_GUARD::QAB(E),XS(e)
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