MESON Chess Problem Database

Problem Display
PID: 254851 (5N1B/8/K2p1P2/R2QnkpN/2p5/2P4p/3p1q1p/3BbRnr w - - 0 1)

Rietveld, Johannes Jacob

Probleemblad, 1946

5N1B/8/K2p1P2/R2QnkpN/2p5/2P4p/3p1q1p/3BbRnr

#2

10 + 12

SOLUTION

  • SOUND
  • Tries
    • 1.Sg7+?
      • 1...Kxf6
        • 2.Qe6#
      • 1...Kf4!
    • 1.Rxf2+?
      • 1...Sf3
        • 2.Qxf3#
      • 1...Bxf2!
    • 1.Qd4?
      • threat
        • 2.Sg3#
        • 2.Bc2#
        • 2.Bg4#
        • 2.Qg4#
      • 1...Qxf1
        • 2.Bg4#
        • 2.Qg4#
      • 1...g4
        • 2.Qxg4#
      • 1...Qf3
        • 2.Bc2#
      • 1...Se2
        • 2.Bc2#
      • 1...Sf3
        • 2.Bc2#
      • 1...d5
        • 2.Sg3#
      • 1...Qf4!
  • Keys
    • 1.Qxc4!
      • threat
        • 2.Sg3#
        • 2.Bc2#
        • 2.Bg4#
        • 2.Qd3#
        • 2.Qg4#
      • 1...Qxf1
        • 2.Bg4#
      • 1...g4
        • 2.Qxg4#
      • 1...Qf3
        • 2.Bc2#
      • 1...Qf4
        • 2.Qd3#
      • 1...Se2
        • 2.Bc2#
      • 1...Sf3
        • 2.Bc2#
      • 1...d5
        • 2.Sg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(j);N_GUARD,N_SPINS(i),P-FLIGHT,XP(H)::QAR1(E)
      • Refutation
        • K(j);N_SPINS(i),P-FLIGHT
    • Try
      • R(B);CHECK,XQ(e)
      • Vars
        • S(b);N_GUARD,N_SPINS(i),P_SPINS(b)::QAR2(E),XS(b)
      • Refutation
        • B(a);XR(B)
    • Try
      • Q(E);
      • Threat
        • DUALS(4)
      • Vars
        • P(k);::QAB1(E),XP(k)
        • Q(e);::B(A)
        • S(b);::B(A)
        • S(b);N_SPINQ(e)::B(A)
        • P(l);N_SPINS(i)::S(F)
      • Refutation
        • Q(e);
  • Actual
    • Q(E);XP(h)
    • Threat
      • DUALS(5)
    • Vars
      • Q(e);N_SPINQ(e),P_PINQ(E),XR(B)::B(A)
      • P(k);::QAB1(E),XP(k)
      • Q(e);::B(A)
      • Q(e);::QAB(E)
      • S(b);::B(A)
      • S(b);N_SPINQ(e)::B(A)
      • P(l);N_SPINS(i)::S(F)
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