MESON Chess Problem Database

Problem Display
PID: 231302 (2N5/2P5/p4p1b/r2k1K2/p3pp2/R7/pBQ2P2/r6b w - - 0 1)

van Dijk, Johannes

De Standaard, 1927

2N5/2P5/p4p1b/r2k1K2/p3pp2/R7/pBQ2P2/r6b

#2

7 + 11

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...e3
      • 2.Rd3#
  • Tries
    • 1.Be5?
      • threat
        • 2.Sb6#
        • 2.Se7#
      • 1...Rc5
        • 2.Se7#
      • 1...Rb1
        • 2.Se7#
      • 1...Rb5
        • 2.Se7#
      • 1...Bf8
        • 2.Sb6#
      • 1...fxe5!
  • Keys
    • 1.Rc3!
      • threat
        • 2.Qd2#
      • 1...Kd4+
        • 2.Rc5#
      • 1...Rc5
        • 2.Rxc5#
      • 1...Rd1
        • 2.Qxd1#
      • 1...e3
        • 2.Rd3#
        • 2.Qd3#
      • 1...f3
        • 2.Qxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • P(e);N_GUARD::R(D)
  • Tries
    • Try
      • B(A);
      • Threat
        • DUALS(2)
      • Vars
        • R(g);::S(G)
        • R(a);::S(G)
        • B(k);::S(G)
      • Refutation
        • P(j);XB(A)
  • Actual
    • R(D);
    • Threat
      • QAR(B)
    • Vars
      • K(h);CHECK,P-FLIGHT::B(A)+R(D)
      • R(g);N_GUARD::R1(D),XR(g)
      • R(a);N_GUARD::QAR(B),XR(a)
      • P(f);S_CUTB(b)::QAB1(B),XP(e)
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