MESON Chess Problem Database

Problem Display
PID: 233911 (Q2br3/2pN1N2/K1p1nq2/1R1r1kpP/8/p5PP/5B2/5R1B w - - 0 1)

Hannemann, Knud Harald

Skakbladet, 1952

Q2br3/2pN1N2/K1p1nq2/1R1r1kpP/8/p5PP/5B2/5R1B

#2

11 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qa1
      • 2.Sh6#
    • 1...Qb2
      • 2.Sh6#
    • 1...Qc3
      • 2.Sh6#
    • 1...Qd4
      • 2.Sh6#
    • 1...Qe5
      • 2.Sh6#
    • 1...Qe7
      • 2.Sh6#
    • 1...Qh6
      • 2.Sxh6#
  • Tries
    • 1.Rxd5+?
      • 1...Qe5
        • 2.Sh6#
        • 2.Rxe5#
      • 1...cxd5!
  • Keys
    • 1.Qxc6!
      • threat
        • 2.Qc2#
      • 1...Sc5+
        • 2.Bxc5#
      • 1...Sf4
        • 2.g4#
      • 1...Qb2
        • 2.Sh6#
      • 1...Qc3
        • 2.Sh6#
      • 1...Qd4
        • 2.Sh6#
      • 1...Qe5
        • 2.Sh6#
      • 1...Rc5
        • 2.Be4#
        • 2.Qe4#
      • 1...Sd4
        • 2.Bxd4#
      • 1...Sg7
        • 2.Be1#
        • 2.Bg1#
        • 2.Be3#
        • 2.Bd4#
        • 2.Bc5#
        • 2.Bb6#
        • 2.Ba7#
      • 1...Sf8
        • 2.Be1#
        • 2.Bg1#
        • 2.Be3#
        • 2.Bd4#
        • 2.Bc5#
        • 2.Bb6#
        • 2.Ba7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • Q(g);N_GUARD::S(J)
    • Q(g);N_GUARD,N_SPINR(b)::S(J)
    • Q(g);N_GUARD::S(J),XQ(g)
  • Tries
    • Try
      • R(F);CHECK,XR(b)
      • Refutation
        • P(e);XR(F)
  • Actual
    • Q(K);XP(e)
    • Threat
      • QAB(K)
    • Vars
      • S(f);CHECK,N_GUARD,N_SPINR(b),P_PINQ(K)::R(A)+B(C),XS(f)
      • S(f);P_PINQ(K),SBLOCK::P(D)
      • Q(g);N_GUARD::S(J)
      • Q(g);N_GUARD,N_SPINR(b)::S(J)
      • S(f);N_GUARD,P_PINQ(K)::R(A)+B(C),XS(f)
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