MESON Chess Problem Database

Problem Display
PID: 60695 (bn4B1/6QK/4P1Np/1Npkr3/6p1/1P1qpP2/1n5B/3R4 w - - 0 1)

Lindeberg, Martin F

Schackvarlden, 1929

bn4B1/6QK/4P1Np/1Npkr3/6p1/1P1qpP2/1n5B/3R4

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd1
      • 2.Se7#
    • 1...Qd2
      • 2.Se7#
    • 1...Qd4
      • 2.Se7#
    • 1...Re4
      • 2.Se7#
    • 1...Rf5
      • 2.Se7#
    • 1...Bc6
      • 2.Qxe5#
    • 1...Sa6
      • 2.Qd7#
    • 1...Sc6
      • 2.Qd7#
    • 1...Sd7
      • 2.Qxd7#
  • Tries
    • 1.Rxd3+?
      • 1...Sxd3
        • 2.Se7#
      • 1...Kc6!
    • 1.Qb7+?
      • 1...Sc6
        • 2.Qd7#
      • 1...Bxb7!
    • 1.Qc7?
      • threat
        • 2.Qd6#
      • 1...Sc4
        • 2.Rxd3#
      • 1...gxf3!
  • Keys
    • 1.Sa7!
      • threat
        • 2.Qxe5#
      • 1...Kd4
        • 2.Qxe5#
      • 1...Kd6
        • 2.Qxe5#
      • 1...Rxe6
        • 2.Qe5#
      • 1...Re4
        • 2.Se7#
      • 1...Rf5
        • 2.Se7#
      • 1...Rg5
        • 2.e7#
      • 1...Rh5
        • 2.e7#
      • 1...Sc4
        • 2.Rxd3#
      • 1...Sc6
        • 2.Qd7#
      • 1...Sd7
        • 2.Qxd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 5
  • Sets
    • Q(b);N_PINS(G),N_SPINQ(b),XR(A)::S(G)
    • Q(b);N_PINS(G)::S(G)
    • R(g);N_PINS(G)::S(G)
    • B(i);SBLOCK::QAR1(H),XR(g)
    • S(j);N_GUARD::QAR2(H)
    • S(j);N_GUARD::QAR2(H),XS(j)
  • Tries
    • Try
      • R(A);CHECK,N_SPINS(G),XQ(b)
      • Vars
        • S(a);XR(A)::S(G)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • Q(H);CHECK
      • Vars
        • S(j);N_GUARD,P_SPINS(j)::QAR2(H)
      • Refutation
        • B(i);XQ(H)
    • Try
      • Q(H);
      • Threat
        • QAR1(H)
      • Vars
        • S(a);N_GUARD::R(A),XQ(b)
      • Refutation
        • P(d);XP(D)
  • Actual
    • S(E);
    • Threat
      • QAR1(H),XR(g)
    • Vars
      • K(f);P-FLIGHT,P_SPINR(g)::QAB1(H),XR(g)
      • R(g);P_SPINR(g),XP(F)::QAR1(H)
      • R(g);N_PINS(G)::S(G)
      • R(g);N_GUARD::B(J)+P(F)
      • S(a);N_GUARD::R(A),XQ(b)
      • S(j);N_GUARD::QAR2(H)
      • S(j);N_GUARD::QAR2(H),XS(j)
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