MESON Chess Problem Database

Problem Display
PID: 157413 (8/8/8/B3p2B/3p1Nn1/4pQ2/Kpk4r/1Rb2NqR w - - 0 1)

Heyl, Peter

Komsomolska Iskra, 1963

8/8/8/B3p2B/3p1Nn1/4pQ2/Kpk4r/1Rb2NqR

#2

8 + 9

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Bd2
      • 2.Qd1#
    • 1...Sf2
      • 2.Qc6#
    • 1...Sf6
      • 2.Qd1#
      • 2.Qc6#
    • 1...Sh6
      • 2.Qd1#
      • 2.Qc6#
    • 1...e2
      • 2.Qb3#
      • 2.Qd3#
  • Tries
    • 1.Bg6+?
      • 1...d3
        • 2.Bxd3#
      • 1...e4!
    • 1.Qe2+?
      • 1...Bd2
        • 2.Qd1#
        • 2.Qd3#
      • 1...Rxe2!
    • 1.Qe4+?
      • 1...d3
        • 2.Qxd3#
        • 2.Qa4#
      • 1...Kd1!
  • Keys
    • 1.Qd5!
      • threat
        • 2.Qb3#
      • 1...Kd1
        • 2.Sxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • B(a);::QAB1(E)
    • S(h);::QAR(E)
  • Tries
    • Try
      • B(H);CHECK
      • Vars
        • P(g);P_SPINP(g)::B(H),XP(g)
      • Refutation
        • P(i);P_SPINP(i)
    • Try
      • Q(E);CHECK
      • Refutation
        • R(e);XQ(E)
    • Try
      • Q(E);CHECK
      • Refutation
        • K(d);P_SPINB(a),P_SPINS(h),S_FLIGHT
  • Actual
    • Q(E);
    • Threat
      • QAB1(E)
    • Vars
      • K(d);P_SPINB(a),P_SPINP(g),P_SPINS(h),S_FLIGHT::S(B),XP(f)
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