MESON Chess Problem Database

Problem Display
PID: 69399 (8/8/4p3/1K1kpb2/4R3/2P2n2/4P1Q1/7B w - - 0 1)

Markx, BJM

Tijdschrift vd NSB, 1897

8/8/4p3/1K1kpb2/4R3/2P2n2/4P1Q1/7B

#2

6 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe4
      • 2.Qxf3#
    • 1...Se1
      • 2.Rd4#
    • 1...Sg1
      • 2.Rd4#
    • 1...Sd2
      • 2.Rd4#
    • 1...Sh2
      • 2.Rd4#
    • 1...Sd4+
      • 2.Rxd4#
    • 1...Sh4
      • 2.Rd4#
    • 1...Sg5
      • 2.Rd4#
  • Tries
    • 1.Qxf3?
      • threat
        • 2.Rd4#
        • 2.Qd3#
      • 1...Bxe4
        • 2.Qd3#
      • 1...Kd6!
  • Keys
    • 1.Qg5!
      • 1...Sd4+
        • 2.Rxd4#
      • 1...Kxe4
        • 2.Bxf3#
      • 1...Kd6
        • 2.Qd8#
      • 1...Bxe4
        • 2.Qd8#
      • 1...Sxg5
        • 2.Rd4#
      • 1...Bh3
        • 2.Rd4#
      • 1...Bg4
        • 2.Rd4#
      • 1...Bg6
        • 2.Rd4#
      • 1...Bh7
        • 2.Rd4#
      • 1...Se1
        • 2.Rd4#
        • 2.Qd8#
      • 1...Sg1
        • 2.Rd4#
        • 2.Qd2#
        • 2.Qd8#
      • 1...Sd2
        • 2.Rd4#
        • 2.Qxd2#
        • 2.Qd8#
      • 1...Sh2
        • 2.Rd4#
        • 2.Qd2#
        • 2.Qd8#
      • 1...Sh4
        • 2.Rd4#
        • 2.Qd2#
        • 2.Qd8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 6
    • REMOVED MATES = 5
  • Sets
    • K(b);OGATEB,P_SPINS(a),S_FLIGHT,XR(E)::QAB1(C),XS(a)
    • S(a);::QAB(C)+R(E),DCHECK
    • S(a);CHECK::QAB(C)+R(E),DCHECK,XS(a)
  • Tries
    • Try
      • Q(C);XS(a)
      • Threat
        • DUALS(2)
      • Vars
        • B(d);P_SPINB(d),XR(E)::QAR2(C)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • Q(C);
    • Vars
      • S(a);CHECK::B(A)+R(E),DCHECK,XS(a)
      • K(b);OGATEB,P_SPINS(a),S_FLIGHT,XR(E)::B(A),XS(a)
      • K(b);P-FLIGHT::QAR2(C)
      • B(d);P_SPINP(c),SBLOCK,XR(E)::QAR(C)
      • S(a);XQ(C)::B(A)+R(E),DCHECK
      • B(d);P_SPINP(c)::R1(E)
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