MESON Chess Problem Database

Problem Display
PID: 194966 (Qn6/8/pp6/b7/4B2K/1r5p/2R1Pk1p/2B1N2R w - - 0 1)

van Dijk, Johannes

Tijdschrift vd NSB, 1918

Qn6/8/pp6/b7/4B2K/1r5p/2R1Pk1p/2B1N2R

#2

8 + 8

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rb1
      • 2.Sd3#
    • 1...Rb2
      • 2.Sd3#
    • 1...Rd3
      • 2.Sxd3#
    • 1...Rb4
      • 2.Sd3#
      • 2.e3#
    • 1...Rb5
      • 2.Sd3#
    • 1...Bc3
      • 2.Sd3#
  • Tries
    • 1.Bg2?
      • threat
        • 2.Rf1#
      • 1...Rb4+
        • 2.e4#
      • 1...hxg2
        • 2.Qxg2#
      • 1...Bd2!
    • 1.Qxb8?
      • threat
        • 2.Qxh2#
      • 1...Rg3
        • 2.Qxg3#
      • 1...Bd2!
  • Keys
    • 1.Bd3!
      • threat
        • 2.Qf3#
      • 1...Rb4+
        • 2.e4#
      • 1...Rxd3
        • 2.Sxd3#
      • 1...Sc6
        • 2.Qf8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • R(c);N_GUARD::S(B)
    • R(c);N_GUARD::S(B),XR(c)
    • B(e);S_CUTR(c)::S(B)
  • Tries
    • Try
      • B(F);
      • Threat
        • R1(C)
      • Vars
        • R(c);CHECK,S_CUTB(e)::R(D)+P(E)
        • P(d);OGATE,XB(F)::QAR1(H),XP(d)
      • Refutation
        • B(e);
    • Try
      • Q(H);XS(h)
      • Threat
        • QAR2(H),XP(b)
      • Vars
        • R(c);N_GUARD::QAB1(H),XR(c)
      • Refutation
        • B(e);
  • Actual
    • B(F);
    • Threat
      • QAR1(H)
    • Vars
      • R(c);CHECK,S_CUTB(e)::R(D)+P(E)
      • R(c);XB(F)::S(B),XR(c)
      • S(h);OGATE::QAR(H)
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