MESON Chess Problem Database

Problem Display
PID: 53596 (5rR1/1N1pkn2/6P1/2p5/2K1P3/7B/8/4RQ2 w - - 0 1)

van Winkle, Wilbur

The Chess Review, 1934

5rR1/1N1pkn2/6P1/2p5/2K1P3/7B/8/4RQ2

#2

8 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Ke8
      • 2.Qxf7#
    • 1...Ra8
      • 2.Qxf7#
    • 1...Rb8
      • 2.Qxf7#
    • 1...Rc8
      • 2.Qxf7#
    • 1...Rd8
      • 2.Qxf7#
    • 1...Re8
      • 2.Qxf7#
    • 1...Rxg8
      • 2.Qxf7#
    • 1...Sg5
      • 2.Qxf8#
    • 1...Sh6
      • 2.Qxf8#
    • 1...Sd8
      • 2.Qxf8#
    • 1...Sh8
      • 2.Qxf8#
  • Tries
    • 1.Qf6+?
      • 1...Ke8
        • 2.Qxf7#
        • 2.gxf7#
      • 1...Kxf6!
  • Keys
    • 1.e5!
      • 1...Sxe5+
        • 2.Rxe5#
      • 1...Sd6+
        • 2.exd6#
      • 1...d5+
        • 2.exd5 ep#
      • 1...Ke8
        • 2.Qxf7#
      • 1...Rxg8
        • 2.Qxf7#
      • 1...Ra8
        • 2.Qf6#
        • 2.Qxf7#
      • 1...Rb8
        • 2.Qf6#
        • 2.Qxf7#
      • 1...Rc8
        • 2.Qf6#
        • 2.Qxf7#
      • 1...Rd8
        • 2.Qf6#
        • 2.Qxf7#
      • 1...Re8
        • 2.Qf6#
        • 2.Qxf7#
      • 1...Sg5
        • 2.Qxf8#
      • 1...Sh6
        • 2.Qxf8#
      • 1...Sd8
        • 2.Qxf8#
      • 1...Sh8
        • 2.Qxf8#
      • 1...d6
        • 2.exd6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • K(c);P-FLIGHT,P_SPINR(e)::QAB1(B),XS(d)
    • R(e);N_GUARD::QAR1(B),XS(d)
    • R(e);N_GUARD,XR(H)::QAR1(B),XS(d)
    • S(d);OGATE::QAB1(B),XR(e)
  • Tries
    • Try
      • Q(B);CHECK
      • Refutation
        • K(c);S_FLIGHT,XQ(B)
  • Actual
    • P(E);
    • Vars
      • S(d);CHECK,OGATE,P_SPINS(d),XP(E)::R(A),XS(d)
      • S(d);CHECK,OGATE::R(A)+P(E)DCHECK,XS(d)
      • P(b);CHECK,OGATE::R(A)+P(E)DCHECK,XP(b),EP
      • K(c);P-FLIGHT,P_SPINR(e)::QAB1(B),XS(d)
      • R(e);N_GUARD,XR(H)::QAR1(B),XS(d)
      • S(d);OGATE::QAB1(B),XR(e)
      • P(b);OGATE::R(A)+P(E)DCHECK,XP(b)
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