MESON Chess Problem Database

Problem Display
PID: 29053 (8/8/8/8/8/4Q3/4pN1n/2r2k1K w - - 0 1)

Rasmussen, Knud AK

Vancouver Province, 1955

8/8/8/8/8/4Q3/4pN1n/2r2k1K

#2

3 + 4

3248 Miniatures canadiennes 2000
5454 Near Snap 2007

SOLUTION

  • SOUND
  • Tries
    • 1.Sh3?
      • threat
        • 2.Qg1#
        • 2.Qf2#
      • 1...Ke1
        • 2.Qxc1#
      • 1...e1S
        • 2.Qf2#
      • 1...e1B
        • 2.Qd3#
      • 1...e1R
        • 2.Qf2#
      • 1...Sf3
        • 2.Qf2#
      • 1...Sg4
        • 2.Qg1#
      • 1...e1Q!
    • 1.Se4?
      • threat
        • 2.Qg1#
        • 2.Qf2#
      • 1...Ke1
        • 2.Qxc1#
      • 1...e1S
        • 2.Sd2#
        • 2.Sg3#
        • 2.Qf2#
      • 1...e1B
        • 2.Qd3#
      • 1...e1R
        • 2.Sd2#
        • 2.Sg3#
        • 2.Qf2#
      • 1...Sf3
        • 2.Qf2#
      • 1...Sg4
        • 2.Qg1#
      • 1...e1Q!
  • Keys
    • 1.Sg4!
      • threat
        • 2.Qg1#
        • 2.Qf2#
      • 1...Ke1
        • 2.Qxc1#
      • 1...Sxg4
        • 2.Qg1#
      • 1...e1Q
        • 2.Sxh2#
      • 1...e1S
        • 2.Sxh2#
        • 2.Qf2#
      • 1...e1B
        • 2.Sxh2#
        • 2.Qd3#
      • 1...e1R
        • 2.Sxh2#
        • 2.Qf2#
      • 1...Sf3
        • 2.Qf2#

This anticipates 15209(1981)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Threat
        • DUALS(2)
      • Vars
        • K(b);P-FLIGHT,P_SPINP(c)::QAR2(C),XR(a)
        • P(c);::QAR1(C)
        • P(c);OGATEB,SBLOCK::QAB(C)
        • S(d);::QAR1(C)
      • Refutation
        • P(c);
    • Try
      • S(B);
      • Threat
        • DUALS(2)
      • Vars
        • K(b);P-FLIGHT,P_SPINP(c)::QAR2(C),XR(a)
        • P(c);OGATEB,SBLOCK::QAB(C)
        • S(d);::QAR1(C)
      • Refutation
        • P(c);
  • Actual
    • S(B);
    • Threat
      • DUALS(2)
    • Vars
      • K(b);P-FLIGHT,P_SPINP(c)::QAR2(C),XR(a)
      • S(d);XS(B)::QAR1(C)
      • P(c);::S(B),XS(d)
      • S(d);::QAR1(C)
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