MESON Chess Problem Database

Problem Display
PID: 184825 (8/7B/8/8/4R1n1/6Q1/6nr/2K2k2 w - - 0 1)

van Dijk, Johannes

De Schaakcourant, 1908

8/7B/8/8/4R1n1/6Q1/6nr/2K2k2

#2

4 + 4

6490 yacpdb 2018
3713 Snap 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Kg1
      • 2.Re1#
    • 1...Se1
      • 2.Rxe1#
    • 1...Sf4
      • 2.Re1#
    • 1...Sh4
      • 2.Re1#
  • Keys
    • 1.Re2!
      • 1...Kg1
        • 2.Re1#
      • 1...Kxe2
        • 2.Bd3#
      • 1...Rxh7
        • 2.Qxg2#
      • 1...Rh1
        • 2.Qxg2#
      • 1...Rh3
        • 2.Qxg2#
      • 1...Rh4
        • 2.Qxg2#
      • 1...Rh5
        • 2.Qxg2#
      • 1...Rh6
        • 2.Qxg2#
      • 1...Se1
        • 2.Rxe1#
        • 2.Qxe1#
      • 1...S2e3
        • 2.Re1#
        • 2.Qe1#
      • 1...Sf4
        • 2.Re1#
        • 2.Qe1#
      • 1...Sh4
        • 2.Re1#
        • 2.Qe1#
      • 1...Sf2
        • 2.Qxf2#
      • 1...S4e3
        • 2.Qf2#
      • 1...Se5
        • 2.Qf2#
      • 1...Sf6
        • 2.Qf2#
      • 1...Sh6
        • 2.Qf2#

This anticipates 187976(1910)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 12
    • REMOVED MATES = 3
  • Sets
    • K(a);P-FLIGHT,P_SPINS(b)::R(C)
    • S(b);N_GUARD::R1(C),XS(b)
    • S(b);N_GUARD::R1(C)
  • Actual
    • R(C);
    • Vars
      • K(a);P-FLIGHT,P_SPINS(b)::R(C)
      • K(a);OGATEB,S_FLIGHT,XR(C)::B(D)
      • R(c);N_GUARD,XB(D)::QAB1(B),XS(b)
      • R(c);N_GUARD::QAB1(B),XS(b)
      • S(d);N_GUARD::QAR1(B),XS(d)
      • S(d);N_GUARD::QAR1(B)
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