MESON Chess Problem Database

Problem Display
PID: 151545 (K1R5/6n1/p6b/3NNR2/2Bkp2r/r4PB1/3PQ3/1b4n1 w - - 0 1)

Albarda, Johannes

Probleemblad, 1970

K1R5/6n1/p6b/3NNR2/2Bkp2r/r4PB1/3PQ3/1b4n1

#2

10 + 9

15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Rc3
      • 2.dxc3#
  • Tries
    • 1.Se3?
      • threat
        • 2.Sc6#
      • 1...Sxf5
        • 2.Sxf5#
      • 1...exf3!
    • 1.Sd3?
      • threat
        • 2.Be5#
      • 1...Rf4
        • 2.Qe3#
      • 1...Bf4
        • 2.Qxe4#
      • 1...Sxf3!
  • Keys
    • 1.Sf4!
      • threat
        • 2.Sc6#
      • 1...Sxe2
        • 2.Sxe2#
      • 1...Sxf5
        • 2.Se6#
      • 1...Rd3
        • 2.Qxe4#
      • 1...Bd3
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • R(c);OGATE::P(A),XR(c)
  • Tries
    • Try
      • S(F);
      • Threat
        • S(G)
      • Vars
        • S(i);XR(H)::S(F),XS(i)
      • Refutation
        • P(e);XP(C)
    • Try
      • S(G);
      • Threat
        • B(D)
      • Vars
        • R(f);S_CUTB(h)::QAB1(B)
        • B(h);S_CUTR(f)::QAR1(B),XP(e)
      • Refutation
        • S(b);XP(C)
  • Actual
    • S(F);
    • Threat
      • S(G)
    • Vars
      • S(b);XQ(B)::S(F),XS(b)
      • S(i);N_GUARD,XR(H)::S(F)
      • R(c);S_CUTB(a)::QAR1(B),XP(e)
      • B(a);S_CUTR(c)::QAB1(B)
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