MESON Chess Problem Database

Problem Display
PID: 175749 (8/4p1K1/2p3p1/2Pk2p1/4R1Q1/8/8/8 w - - 0 1)

van Dijk, Johannes

Het Familieblad, 1898

8/4p1K1/2p3p1/2Pk2p1/4R1Q1/8/8/8

#2

4 + 5

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Ra4?
      • 1...Ke5
        • 2.Qe4#
      • 1...e5
        • 2.Qc4#
      • 1...e6
        • 2.Qd4#
      • 1...Kxc5!
    • 1.Rc4?
      • threat
        • 2.Qe4#
      • 1...Ke5
        • 2.Qe4#
      • 1...e5!
    • 1.Rd4+?
      • 1...Ke5
        • 2.Qe4#
      • 1...Kxc5!
    • 1.Qf5+?
      • 1...e5
        • 2.Qxe5#
      • 1...gxf5!
    • 1.Qxg5+?
      • 1...e5
        • 2.Qxe5#
      • 1...Kxe4!
  • Keys
    • 1.Rb4!
      • 1...Kxc5
        • 2.Qd4#
      • 1...Ke5
        • 2.Qe4#
      • 1...e5
        • 2.Qc4#
      • 1...e6
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(A);
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
        • P(e);SBLOCK::QAB1(B)
        • P(e);SBLOCK::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT,XP(C)
    • Try
      • R(A);
      • Threat
        • QAB1(B)
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • P(e);
    • Try
      • R(A);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT,XP(C)
    • Try
      • Q(B);CHECK
      • Vars
        • P(e);P_SPINP(e)::QAR1(B),XP(e)
      • Refutation
        • P(d);XQ(B)
    • Try
      • Q(B);CHECK,XP(b)
      • Vars
        • P(e);P_SPINP(e)::QAR1(B),XP(e)
      • Refutation
        • K(a);S_FLIGHT,XR(A)
  • Actual
    • R(A);
    • Vars
      • K(a);P-FLIGHT,XP(C)::QAB1(B)
      • K(a);P-FLIGHT::QAR1(B)
      • P(e);SBLOCK::QAB1(B)
      • P(e);SBLOCK::QAR1(B)
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