MESON Chess Problem Database

Problem Display
PID: 57430 (4R3/2p1nQ2/1r2p3/bR1pkNN1/K7/2q3P1/1BP5/8 w - - 0 1)

van der Linden, AFC

Chess Life, 1956

4R3/2p1nQ2/1r2p3/bR1pkNN1/K7/2q3P1/1BP5/8

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qd4+
      • 2.Bxd4#
    • 1...Rxb5
      • 2.Qxe6#
    • 1...Rb7
      • 2.Qxe6#
    • 1...Rb8
      • 2.Qxe6#
    • 1...Sc6
      • 2.Rxe6#
      • 2.Qxe6#
    • 1...exf5
      • 2.Rxd5#
    • 1...c6
      • 2.Qxe6#
  • Tries
    • 1.Sxe7?
      • threat
        • 2.Qf4#
      • 1...Kd4
        • 2.Qf4#
      • 1...Kd6
        • 2.Qxe6#
      • 1...Qd4+!
    • 1.Rxb6?
      • threat
        • 2.Rxe6#
        • 2.Qxe6#
      • 1...Qd4+
        • 2.Bxd4#
      • 1...Bxb6
        • 2.Qxe6#
      • 1...exf5
        • 2.Qf6#
        • 2.Qg7#
      • 1...cxb6
        • 2.Qxe6#
      • 1...d4
        • 2.Qxe6#
      • 1...Sc6
        • 2.Rxe6#
        • 2.Qxe6#
      • 1...c6
        • 2.Qxe6#
      • 1...Sxf5!
  • Keys
    • 1.Se3!
      • threat
        • 2.Qf4#
      • 1...Qd4+
        • 2.Sc4#
      • 1...Kd4
        • 2.Qf4#
      • 1...Kd6
        • 2.Qxe6#
      • 1...Sf5
        • 2.Rxd5#
      • 1...Sg6
        • 2.Rxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • Q(a);CHECK,OGATE::B(A),XQ(a)
    • R(e);N_GUARD,N_SPINP(c),XR(E)::QAR1(H),XP(f)
    • R(e);N_GUARD::QAR1(H),XP(f)
    • P(f);N_GUARD,P_SPINS(h),XS(F)::R1(E),XP(c)
    • P(g);S_CUTR(e)::QAR1(H),XP(f)
  • Tries
    • Try
      • S(F);XS(h)
      • Threat
        • QAB1(H)
      • Vars
        • K(d);N_SPINP(c),S_FLIGHT::QAR2(H)
        • K(d);N_SPINP(c),N_SPINQ(a),S_FLIGHT::QAR1(H),XP(f)
      • Refutation
        • Q(a);CHECK
    • Try
      • R(E);N_PINP(c),XR(e)
      • Threat
        • DUALS(2)
      • Vars
        • Q(a);CHECK,OGATE::B(A),XQ(a)
        • B(b);XR(E)::QAR1(H),XP(f)
        • P(g);XR(E)::QAR1(H),XP(f)
        • P(c);N_SPINQ(a)::QAR1(H),XP(f)
        • P(g);::QAR1(H),XP(f)
      • Refutation
        • S(h);P_SPINP(f),XS(F)
  • Actual
    • S(F);
    • Threat
      • QAB1(H)
    • Vars
      • Q(a);CHECK::S(F)
      • K(d);N_SPINP(c),S_FLIGHT::QAR2(H)
      • K(d);N_SPINP(c),N_SPINQ(a),S_FLIGHT::QAR1(H),XP(f)
      • S(h);N_GUARD,S_CUTP(f)::R1(E),XP(c)
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