MESON Chess Problem Database

Problem Display
PID: 154971 (5R2/r4n1p/2Np1Q2/1B1pp3/4k2K/r3P1P1/8/3N4 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Die Schwalbe, 2014

5R2/r4n1p/2Np1Q2/1B1pp3/4k2K/r3P1P1/8/3N4

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe3
      • 2.Sf2#
    • 1...Sg5
      • 2.Qf5#
    • 1...Sh6
      • 2.Qf3#
    • 1...Sd8
      • 2.Qf3#
      • 2.Qf5#
    • 1...Sh8
      • 2.Qf3#
      • 2.Qf5#
  • Tries
    • 1.Sd4?
      • threat
        • 2.Qf3#
        • 2.Qf5#
      • 1...exd4
        • 2.Qf4#
      • 1...Sg5
        • 2.Qf5#
      • 1...Sh6
        • 2.Qf3#
      • 1...Rxe3!
    • 1.Rxf7?
      • threat
        • 2.Qf3#
        • 2.Qf5#
      • 1...Rxe3
        • 2.Sf2#
        • 2.Qf5#
      • 1...d4
        • 2.Qf3#
      • 1...Rxf7!
    • 1.Qxe5+?
      • 1...Kf3
        • 2.Qxd5#
      • 1...Sxe5
        • 2.Rf4#
      • 1...dxe5!
    • 1.Qxf7?
      • threat
        • 2.Qf3#
        • 2.Qf5#
      • 1...Rxe3
        • 2.Sf2#
        • 2.Qf5#
      • 1...d4
        • 2.Qf3#
      • 1...Rxf7!
    • 1.g4?
      • threat
        • 2.Qf5#
      • 1...Sh6
        • 2.Qf3#
      • 1...d4!
  • Keys
    • 1.Be2!
      • threat
        • 2.Qf3#
      • 1...Rxe3
        • 2.Sf2#
      • 1...Sg5
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • R(a);SBLOCK,XP(B)::S(A)
    • S(g);::QAB1(G)
  • Tries
    • Try
      • S(F);
      • Threat
        • DUALS(2)
      • Vars
        • P(d);N_GUARD,XS(F)::QAR1(G)
        • S(g);::QAB1(G)
      • Refutation
        • R(a);XP(B)
    • Try
      • R(H);XS(g)
      • Threat
        • DUALS(2)
      • Vars
        • P(c);::QAB1(G)
      • Refutation
        • R(f);XR(H)
    • Try
      • Q(G);CHECK,XP(d)
      • Vars
        • K(b);P_SPINS(g),S_FLIGHT::QAB(G),XP(c)
        • S(g);OGATE,XQ(G)::R1(H)
      • Refutation
        • P(e);XQ(G)
    • Try
      • Q(G);XS(g)
      • Threat
        • DUALS(2)
      • Vars
        • P(c);::QAB1(G)
      • Refutation
        • R(f);XQ(G)
    • Try
      • P(C);
      • Threat
        • QAB1(G)
      • Vars
        • S(g);::QAB1(G)
      • Refutation
        • P(c);
  • Actual
    • B(E);
    • Threat
      • QAB1(G)
    • Vars
      • R(a);SBLOCK,XP(B)::S(A)
      • S(g);::QAB1(G)
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