MESON Chess Problem Database

Problem Display
PID: 91476 (3r4/1n2R2r/b3BpN1/6p1/2n1k1p1/bN2p3/K1P3P1/1Q4B1 w - - 0 1)

Swane, Jan Arnold Willem

Probleemblad, 1950

3r4/1n2R2r/b3BpN1/6p1/2n1k1p1/bN2p3/K1P3P1/1Q4B1

#2

9 + 11

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...Rf8
      • 2.c3#
    • 1...Rg8
      • 2.c3#
    • 1...Rh8
      • 2.c3#
    • 1...Bd6
      • 2.c3#
    • 1...Scd6
      • 2.c4#
    • 1...Sbd6
      • 2.c3#
  • Tries
    • 1.Bd5+?
      • 1...Kf5
        • 2.Be4#
        • 2.c3#
      • 1...Kxd5!
  • Keys
    • 1.Qf1!
      • threat
        • 2.Qf5#
      • 1...Rd5
        • 2.Bf5#
      • 1...Scd6
        • 2.Bf7#
      • 1...Sbd6
        • 2.Qd3#
      • 1...f5
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 9
  • Sets
    • R(k);OGATE::P(D),XR(k)
    • R(k);N_GUARD::QAB(A)+P(D)
    • B(a);S_CUTR(k)::QAB(A)+P(D)
    • S(c);OGATE::QAB(A)+P(D)
    • S(i);S_CUTR(k)::QAB(A)+P(D)
  • Tries
    • Try
      • B(G);CHECK
      • Refutation
        • K(d);S_FLIGHT,XB(G)
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • R(k);SBLOCK::R(I)+B(G),DCHECK
      • S(c);N_GUARD,S_CUTB(a)::R(I)+B(G)
      • S(i);S_CUTR(k)::QAB1(A)
      • P(h);::QAB1(A),XP(h)
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