MESON Chess Problem Database

Problem Display
PID: 266033 (2b3B1/5nq1/5R1B/3NR1r1/2pkpN2/Q1p5/2P3p1/6K1 w - - 0 1)

Swane, Jan Arnold Willem

Probleemblad, 1950

2b3B1/5nq1/5R1B/3NR1r1/2pkpN2/Q1p5/2P3p1/6K1

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe5
      • 2.Qxc3#
    • 1...Rxe5
      • 2.Qa7#
    • 1...Sxe5
      • 2.Se2#
  • Tries
    • 1.Sd3?
      • threat
        • 2.Qc5#
        • 2.Qxc3#
        • 2.Qa7#
      • 1...Qxf6
        • 2.Qc5#
        • 2.Qxc3#
      • 1...Rxe5
        • 2.Qc5#
      • 1...Sxe5
        • 2.Qc5#
        • 2.Qxc3#
      • 1...Sxh6
        • 2.Qc5#
        • 2.Qxc3#
      • 1...cxd3
        • 2.Qxc3#
      • 1...Qf8
        • 2.Qxc3#
      • 1...Ba6
        • 2.Qc5#
        • 2.Qxc3#
      • 1...Sd6
        • 2.Qc5#
        • 2.Qxc3#
      • 1...Sd8
        • 2.Qc5#
        • 2.Qxc3#
      • 1...Sh8
        • 2.Qc5#
        • 2.Qxc3#
      • 1...exd3!
    • 1.Sc7?
      • threat
        • 2.Qc5#
      • 1...Ke3
        • 2.Qxc3#
      • 1...Kxe5
        • 2.Qxc3#
      • 1...Rxe5
        • 2.Se2#
      • 1...Sxe5
        • 2.Qa7#
      • 1...Qf8!
  • Keys
    • 1.Se7!
      • threat
        • 2.Qc5#
      • 1...Ke3
        • 2.Qxc3#
      • 1...Kxe5
        • 2.Qxc3#
      • 1...Rxe5
        • 2.Se2#
      • 1...Sxe5
        • 2.Qa7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(d);N_GUARD,S_FLIGHT,XR(F)::QAB(C),XP(b)
    • R(f);SBLOCK,XR(F)::QAB(C)
    • S(g);SBLOCK,XR(F)::S(D)
  • Tries
    • Try
      • S(D);
      • Threat
        • DUALS(3)
      • Vars
        • R(f);XR(F)::QAB1(C)
        • P(c);XS(D)::QAB1(C),XP(b)
        • Q(h);::QAB1(C),XP(b)
      • Refutation
        • P(e);XS(D)
    • Try
      • S(E);
      • Threat
        • QAB1(C)
      • Vars
        • K(d);N_GUARD,P_SPINP(b),S_FLIGHT::QAR2(C),XP(b)
        • K(d);N_GUARD,S_FLIGHT,XR(F)::QAB(C),XP(b)
        • R(f);SBLOCK,XR(F)::S(D)
        • S(g);SBLOCK,XR(F)::QAB(C)
      • Refutation
        • Q(h);
  • Actual
    • S(E);
    • Threat
      • QAB1(C)
    • Vars
      • K(d);N_GUARD,P_SPINP(b),S_FLIGHT::QAR2(C),XP(b)
      • K(d);N_GUARD,S_FLIGHT,XR(F)::QAB(C),XP(b)
      • R(f);SBLOCK,XR(F)::S(D)
      • S(g);SBLOCK,XR(F)::QAB(C)
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