MESON Chess Problem Database

Problem Display
PID: 233898 (R1N1k2r/pp2nppp/3p1p2/1p6/1P4P1/2Q2Prb/2P2PPR/3K2bN w - - 0 1)

Hannemann, Knud Harald

Skakbladet, 0000

R1N1k2r/pp2nppp/3p1p2/1p6/1P4P1/2Q2Prb/2P2PPR/3K2bN

#2

12 + 14

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Qe1?
      • threat
        • 2.Sb6#
        • 2.Qxe7#
      • 1...Kd8
        • 2.Qxe7#
      • 1...Kf8
        • 2.Sxe7#
      • 1...Bxg4
        • 2.Qxe7#
      • 1...b6
        • 2.Sxb6#
        • 2.Qxe7#
      • 1...Kd7!
    • 1.Qe3?
      • threat
        • 2.Sb6#
        • 2.Qxe7#
      • 1...Kd8
        • 2.Qxe7#
      • 1...Kf8
        • 2.Sxe7#
      • 1...Bxg4
        • 2.Qxe7#
      • 1...b6
        • 2.Sxb6#
        • 2.Qxe7#
      • 1...Kd7!
  • Keys
    • 1.Qc7!
      • threat
        • 2.Sxd6#
        • 2.Sxe7#
        • 2.Qxe7#
      • 1...Kf8
        • 2.Sxe7#
        • 2.Qd8#
      • 1...Bxg4
        • 2.Sxd6#
        • 2.Qxe7#
      • 1...Sxc8
        • 2.Rxc8#
      • 1...Sd5
        • 2.Sb6#
        • 2.Sxd6#
        • 2.Sxa7#
        • 2.Se7#
      • 1...Sf5
        • 2.Sb6#
        • 2.Sxd6#
        • 2.Sxa7#
        • 2.Se7#
      • 1...Sc6
        • 2.Sxd6#
      • 1...Sg6
        • 2.Sb6#
        • 2.Sxd6#
        • 2.Sxa7#
        • 2.Se7#
      • 1...Sg8
        • 2.Sb6#
        • 2.Sxd6#
        • 2.Sxa7#
        • 2.Se7#
      • 1...d5
        • 2.Sd6#
        • 2.Sxe7#
        • 2.Qxe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(G);P_PINS(i)
      • Threat
        • DUALS(2)
      • Vars
        • K(m);N_SPINS(i),P-FLIGHT::QAB1(G),XS(i)
        • K(m);N_SPINS(i),P-FLIGHT::R(K)+S(L),XS(i)
        • B(c);P_PINP(H),XP(J)::QAR1(G),XS(i)
      • Refutation
        • K(m);N_SPINS(i),S_FLIGHT
    • Try
      • Q(G);P_PINS(i)
      • Threat
        • DUALS(2)
      • Vars
        • K(m);N_SPINS(i),P-FLIGHT::QAB1(G),XS(i)
        • K(m);N_SPINS(i),P-FLIGHT::R(K)+S(L),XS(i)
        • B(c);P_PINP(H),XP(J)::QAR1(G),XS(i)
      • Refutation
        • K(m);N_SPINS(i),S_FLIGHT
  • Actual
    • Q(G);
    • Threat
      • DUALS(3)
    • Vars
      • S(i);OGATE,P_SPINS(i),XS(L)::R(K),XS(i)
      • S(i);::R(K)+S(L),DCHECK,XP(e)
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