MESON Chess Problem Database

Problem Display
PID: 91477 (3r1q2/2N1Rn1B/pr3p1p/1bB1pp1N/2n1k1p1/4p3/K1P3Pb/1Q6 w - - 0 1)

Swane, Jan Arnold Willem

Probleemblad, 1950

3r1q2/2N1Rn1B/pr3p1p/1bB1pp1N/2n1k1p1/4p3/K1P3Pb/1Q6

#2

9 + 15

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rd3
      • 2.cxd3#
    • 1...Ra8
      • 2.c3#
    • 1...Rb8
      • 2.c3#
    • 1...Rc8
      • 2.c3#
    • 1...Re8
      • 2.c3#
    • 1...Scd6
      • 2.c4#
    • 1...Sfd6
      • 2.c3#
  • Keys
    • 1.Qf1!
      • threat
        • 2.Bxf5#
        • 2.Qxf5#
      • 1...Bf4
        • 2.Qxf4#
      • 1...Bd7
        • 2.Qd3#
        • 2.Qxc4#
      • 1...Scd6
        • 2.Sxf6#
      • 1...Sfd6
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • R(n);OGATE::P(C),XR(n)
    • R(n);N_GUARD::QAB(A)+P(C)
    • S(c);OGATE::QAB(A)+P(C)
    • S(m);S_CUTR(n)::QAB(A)+P(C)
  • Actual
    • Q(A);
    • Threat
      • DUALS(2)
    • Vars
      • B(a);N_GUARD::QAR1(A),XB(a)
      • S(c);S_CUTR(j)::S(F),XP(k)
      • S(m);S_CUTR(n)::QAB1(A)
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