MESON Chess Problem Database

Problem Display
PID: 258096 (8/5K2/2p3p1/2pk1p2/2Npp3/1P2R1r1/7B/3Q4 w - - 0 1)

Seidemann, Felix

Die Schwalbe, 1931

8/5K2/2p3p1/2pk1p2/2Npp3/1P2R1r1/7B/3Q4

#2

6 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rg1
      • 2.Sb6#
    • 1...Rg2
      • 2.Sb6#
    • 1...Rxe3
      • 2.Sxe3#
      • 2.Sb6#
    • 1...Rf3
      • 2.Sb6#
    • 1...Rh3
      • 2.Sb6#
    • 1...Rg4
      • 2.Sb6#
    • 1...Rg5
      • 2.Sb6#
  • Tries
    • 1.Qd3?
      • 1...Rxe3
        • 2.Sxe3#
        • 2.Sb6#
      • 1...exd3
        • 2.Re5#
      • 1...f4
        • 2.Qxe4#
      • 1...Rg1
        • 2.Sb6#
      • 1...Rg2
        • 2.Sb6#
      • 1...Rf3
        • 2.Sb6#
      • 1...Rh3
        • 2.Sb6#
      • 1...Rg4
        • 2.Sb6#
      • 1...Rg5
        • 2.Sb6#
      • 1...g5!
  • Keys
    • 1.Qf3!
      • 1...Rxf3
        • 2.Sb6#
      • 1...dxe3
        • 2.Qd1#
      • 1...exf3
        • 2.Re5#
      • 1...d3
        • 2.Rxd3#
      • 1...f4
        • 2.Qxe4#
      • 1...Rg1
        • 2.Sb6#
      • 1...Rg2
        • 2.Sb6#
      • 1...Rh3
        • 2.Sb6#
      • 1...Rg4
        • 2.Sb6#
      • 1...Rg5
        • 2.Sb6#
      • 1...g5
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • R(a);::S(E)
  • Tries
    • Try
      • Q(A);
      • Vars
        • P(c);N_SPINP(b),OGATE,XQ(A)::R1(D)
        • P(f);N_GUARD::QAB1(A),XP(c)
        • R(a);::S(E)
      • Refutation
        • P(h);
  • Actual
    • Q(A);N_PINP(b),P_PINP(c)
    • Vars
      • R(a);N_SPINP(c),XQ(A)::S(E)
      • P(b);OGATEB,XR(D)::QAR(A)
      • P(c);N_SPINP(c),OGATE,XQ(A)::R1(D)
      • P(b);OGATEB::R(D),XP(b)
      • P(f);N_GUARD::QAB1(A),XP(c)
      • R(a);::S(E)
      • P(h);N_GUARD::QAR2(A),XP(f)
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