MESON Chess Problem Database

Problem Display
PID: 144693 (4KB2/8/1P1r1P2/2k5/pR4P1/N2p4/N2P4/7Q w - - 0 1)

Madsen, Arthur Valdemar

Skakbladet, 1980

4KB2/8/1P1r1P2/2k5/pR4P1/N2p4/N2P4/7Q

#2

10 + 4

15422 Problemskak 2008
3713 Snap 2012
15422 Problemskak 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Sc2?
      • 1...dxc2
        • 2.d4#
      • 1...a3!
    • 1.Qh2?
      • threat
        • 2.Qxd6#
      • 1...Kd5
        • 2.Qxd6#
      • 1...Kc6!
  • Keys
    • 1.Ke7!
      • 1...Re6+
        • 2.Kxe6#
      • 1...Rd7+
        • 2.Kxd7#
      • 1...Rxb6
        • 2.Rc4#
      • 1...Rxf6
        • 2.Kxf6#
      • 1...Rd5
        • 2.Qc1#
      • 1...Rd4
        • 2.Rb5#
      • 1...Rc6
        • 2.Qh5#
      • 1...Rd8
        • 2.Kxd8#

Anticipated by 17371(1946)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);
      • Vars
        • P(a);OGATE,XS(D)::P(C)
      • Refutation
        • P(b);
    • Try
      • Q(A);
      • Threat
        • QAB1(A),XR(d)
      • Vars
        • K(c);N_SPINR(d),P-FLIGHT::QAR1(A),XR(d)
      • Refutation
        • K(c);N_SPINR(d),P-FLIGHT
  • Actual
    • K(I);N_PINR(d),P-FLIGHT
    • Vars
      • R(d);CHECK::B(J)+K(I),XR(d)
      • R(d);SBLOCK,XP(G)::R1(E)
      • R(d);XP(H)::B(J)+K(I),XR(d)
      • R(d);SBLOCK::QAR(A)
      • R(d);SBLOCK::R1(E)
      • R(d);N_GUARD,SBLOCK::QAR(A)
      • R(d);::B(J)+K(I),XR(d)
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