MESON Chess Problem Database

Problem Display
PID: 198322 (2b2R1K/r1B4p/p2N4/4k3/8/1Q6/2NPP3/bn5q w - - 0 1)

van Dijk, Johannes

Gymnasiasten Schach Blad, 1920

2b2R1K/r1B4p/p2N4/4k3/8/1Q6/2NPP3/bn5q

#2

8 + 8

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Qe4
      • 2.Sb7#
    • 1...Bf5
      • 2.Rxf5#
    • 1...Bb7
      • 2.Rf5#
    • 1...Sc3
      • 2.d4#
  • Tries
    • 1.Qe3+?
      • 1...Qe4
        • 2.Qxe4#
      • 1...Kd5+!
  • Keys
    • 1.e4!
      • threat
        • 2.Qd5#
      • 1...Qxe4
        • 2.Sb7#
      • 1...Bf5
        • 2.Rxf5#
      • 1...Be6
        • 2.Qg3#
      • 1...Bb7
        • 2.Rf5#
      • 1...Sc3
        • 2.d4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • Q(c);SBLOCK::B(F)+S(E)
    • B(h);N_GUARD::R1(G),XB(h)
    • B(h);N_GUARD::R1(G)
    • S(b);S_CUTB(a)::P(B)
  • Tries
    • Try
      • Q(D);CHECK
      • Vars
        • Q(c);N_GUARD,P_SPINQ(c)::QAR1(D),XQ(c)
      • Refutation
        • K(d);CHECK,P-FLIGHT
  • Actual
    • P(C);
    • Threat
      • QAR1(D)
    • Vars
      • Q(c);SBLOCK,XP(C)::B(F)+S(E)
      • B(h);N_GUARD::R1(G),XB(h)
      • B(h);SBLOCK::QAB(D)
      • B(h);N_GUARD::R1(G)
      • S(b);S_CUTB(a)::P(B)
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