MESON Chess Problem Database

Problem Display
PID: 116363 (3nR3/b4p2/4p3/3pkpQ1/K2RN1P1/BP1p3r/3P2B1/4Nr2 w - - 0 1)

Hermanson, Halvar

Sinfonie Scacchistiche, 1970

3nR3/b4p2/4p3/3pkpQ1/K2RN1P1/BP1p3r/3P2B1/4Nr2

#2

11 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd4
      • 2.Bb2#
    • 1...Rf4
      • 2.Qf6#
    • 1...Bxd4
      • 2.Bd6#
  • Tries
    • 1.Sg3?
      • threat
        • 2.Rxd5#
      • 1...Kxd4
        • 2.Qe3#
      • 1...Bxd4
        • 2.Sxd3#
      • 1...Rf3
        • 2.Sxf3#
      • 1...Rf4!
    • 1.Qxf5+?
      • 1...Kxd4
        • 2.Bb2#
      • 1...Rxf5!
  • Keys
    • 1.Sf2!
      • threat
        • 2.Rxd5#
      • 1...Kxd4
        • 2.Qf4#
      • 1...Bxd4
        • 2.Qxf5#
      • 1...Rf3
        • 2.Sxf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(e);N_SPINP(f),OGATEB,S_FLIGHT,XR(G)::B(D)
    • R(a);SBLOCK::QAB1(J)
    • B(h);SBLOCK,XR(G)::B(D)
  • Tries
    • Try
      • S(H);
      • Threat
        • R1(G),XP(d)
      • Vars
        • K(e);N_SPINP(f),S_FLIGHT,XR(G)::QAB1(J)
        • B(h);SBLOCK,XR(G)::S(A),XP(b)
        • R(a);N_GUARD::S(A),XR(a)
      • Refutation
        • R(a);P_PINR(G)
    • Try
      • Q(J);CHECK,P_PINP(g),XP(f)
      • Vars
        • K(e);N_SPINP(g),S_FLIGHT,XR(G)::B(D)
      • Refutation
        • R(a);XQ(J)
  • Actual
    • S(H);
    • Threat
      • R1(G),XP(d)
    • Vars
      • K(e);N_SPINP(f),S_FLIGHT,XR(G)::QAR2(J)
      • B(h);SBLOCK,XR(G)::QAR1(J),XP(f)
      • R(c);N_GUARD::S(A),XR(c)
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