MESON Chess Problem Database

Problem Display
PID: 64085 (2bRK1Q1/3n4/2p1pp2/1pr1k3/2p1N2b/q2nR3/4N3/1B6 w - - 0 1)

Haring, Jacobus

2nd Prize, Pedagogusok Hongarije, 1966

2bRK1Q1/3n4/2p1pp2/1pr1k3/2p1N2b/q2nR3/4N3/1B6

#2

7 + 12

5227 Schaak..., maar raak! 1969

SOLUTION

  • SOUND
  • Sets
    • 1...Kf5
      • 2.Sd6#
    • 1...Sb6
      • 2.S4g3#
    • 1...Sb8
      • 2.S4g3#
    • 1...Sf8
      • 2.S4g3#
  • Tries
    • 1.Sf2+?
      • 1...Kd5
        • 2.Qxe6#
      • 1...Kf5
        • 2.Qg4#
      • 1...Kd6!
    • 1.S4g3+?
      • 1...Kd5
        • 2.Qxe6#
      • 1...Kd6!
    • 1.Sd6+?
      • 1...Kd5
        • 2.Qxe6#
      • 1...Kxd6!
  • Keys
    • 1.Ke7!
      • threat
        • 2.Qxe6#
      • 1...Rd5+
        • 2.Sd6#
      • 1...f5+
        • 2.Sf6#
      • 1...Kd5
        • 2.Qxe6#
      • 1...Kf5
        • 2.Sd6#
      • 1...Sf4
        • 2.S4c3#
      • 1...Sb6
        • 2.S4g3#
      • 1...Sb8
        • 2.S4g3#
      • 1...Sf8
        • 2.S4g3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(g);P-FLIGHT::S(D)
    • S(k);::R(C)+S(D)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(g);P-FLIGHT,P_SPINP(i),P_SPINS(k)::QAB1(G),XP(i)
        • K(g);P-FLIGHT,P_SPINS(b)::QAB1(G)
      • Refutation
        • K(g);P_SPINS(k),S_FLIGHT
    • Try
      • S(D);CHECK
      • Vars
        • K(g);P-FLIGHT,P_SPINP(i),P_SPINS(k)::QAB1(G),XP(i)
      • Refutation
        • K(g);P_SPINS(k),S_FLIGHT
    • Try
      • S(D);CHECK
      • Vars
        • K(g);P-FLIGHT,P_SPINP(i)::QAB1(G),XP(i)
      • Refutation
        • K(g);P_SPINS(k),S_FLIGHT,XS(D)
  • Actual
    • K(F);P-FLIGHT
    • Threat
      • QAR1(G),XP(i)
    • Vars
      • R(f);CHECK,SBLOCK::R(C)+S(D)
      • P(j);CHECK,SBLOCK::R(C)+S(D)
      • K(g);P-FLIGHT,P_SPINP(i),P_SPINS(k)::QAB1(G),XP(i)
      • K(g);P-FLIGHT::S(D)
      • S(b);::R(C)+S(D)
      • S(k);::R(C)+S(D)
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