MESON Chess Problem Database

Problem Display
PID: 72056 (3Q4/3BNp2/8/2r1k2K/2P3PR/1PpPNp1n/2Pn1B2/4R3 w - - 0 1)

Hannemann, Knud Harald

Svenska Dagbladet, 1925

3Q4/3BNp2/8/2r1k2K/2P3PR/1PpPNp1n/2Pn1B2/4R3

#2

13 + 7

23 Die Schwalbe 2006

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4+
      • 2.S3f5#
  • Tries
    • 1.Sd1+?
      • 1...Kf4+
        • 2.g5#
      • 1...Kd6+
        • 2.Bf5#
      • 1...Kf6+
        • 2.Sf5#
      • 1...Se4!
    • 1.Sf1+?
      • 1...Kf4+
        • 2.g5#
      • 1...Kd6+
        • 2.Bf5#
      • 1...Kf6+
        • 2.Sf5#
      • 1...Se4!
    • 1.Sg2+?
      • 1...Kd6+
        • 2.Bf5#
      • 1...Kf6+
        • 2.Sf5#
      • 1...Se4!
    • 1.S3d5+?
      • 1...Kd6
        • 2.Sf5#
        • 2.Ba4#
        • 2.Bb5#
        • 2.Bf5#
        • 2.Bc6#
        • 2.Be6#
        • 2.Bc8#
        • 2.Be8#
      • 1...Se4!
    • 1.S3f5+?
      • 1...Kf4
        • 2.Bg3#
        • 2.g5#
      • 1...Kf6
        • 2.Sd5#
        • 2.Sc6#
        • 2.Sg6#
        • 2.Sc8#
        • 2.Sg8#
        • 2.Qh8#
      • 1...Se4!
  • Keys
    • 1.d4+!
      • 1...Kxd4+
        • 2.S3f5#
      • 1...Ke4+
        • 2.S3d5#
      • 1...Kf4+
        • 2.g5#
      • 1...Kd6+
        • 2.Bf5#
      • 1...Kf6+
        • 2.S7f5#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(f);CHECK,S_FLIGHT::B(C)+S(F),DCHECK
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(f);CHECK,S_FLIGHT::R(I)+P(H)
        • K(f);CHECK,S_FLIGHT::QAR(M)+B(K)
        • K(f);CHECK,S_FLIGHT::QAB(M)+S(L)
      • Refutation
        • S(a);P_SPINS(a)
    • Try
      • S(F);CHECK
      • Vars
        • K(f);CHECK,S_FLIGHT::R(I)+P(H)
        • K(f);CHECK,S_FLIGHT::QAR(M)+B(K)
        • K(f);CHECK,S_FLIGHT::QAB(M)+S(L)
      • Refutation
        • S(a);P_SPINS(a)
    • Try
      • S(F);CHECK
      • Vars
        • K(f);CHECK,S_FLIGHT::QAR(M)+B(K)
        • K(f);CHECK,S_FLIGHT::QAB(M)+S(L)
      • Refutation
        • S(a);P_SPINS(a)
    • Try
      • S(F);CHECK
      • Refutation
        • S(a);P_SPINS(a)
    • Try
      • S(F);CHECK
      • Refutation
        • S(a);P_SPINS(a)
  • Actual
    • P(E);CHECK
    • Vars
      • K(f);CHECK,S_FLIGHT,XP(E)::B(C)+S(F),DCHECK
      • K(f);CHECK,P-FLIGHT::R(A)+S(F)
      • K(f);CHECK,S_FLIGHT::R(I)+P(H)
      • K(f);CHECK,S_FLIGHT::QAR(M)+B(K)
      • K(f);CHECK,S_FLIGHT::QAB(M)+S(L)
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