MESON Chess Problem Database

Problem Display
PID: 135950 (2bR4/2Q5/8/1N4p1/1p1Rp1Pp/2r1k3/4B3/B3K3 w - - 0 1)

Duca, Delia Monica

Mat Plus, 2009

2bR4/2Q5/8/1N4p1/1p1Rp1Pp/2r1k3/4B3/B3K3

#2

8 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rc1+
      • 2.Qxc1#
    • 1...Ra3
      • 2.Qc1#
    • 1...Rb3
      • 2.Qc1#
    • 1...h3
      • 2.Qg3#
  • Tries
    • 1.Sxc3?
      • threat
        • 2.Sd1#
        • 2.Sd5#
        • 2.Rxe4#
      • 1...Bf5
        • 2.Sd1#
        • 2.Sd5#
      • 1...Be6
        • 2.Sd1#
        • 2.Rxe4#
      • 1...Bb7
        • 2.Sd1#
      • 1...bxc3!
    • 1.Rd3+?
      • 1...exd3
        • 2.Qe5#
      • 1...Rxd3!
  • Keys
    • 1.Sd6!
      • threat
        • 2.Rxe4#
      • 1...Rc1+
        • 2.Qxc1#
      • 1...Kxd4
        • 2.Sf5#
      • 1...Kf4
        • 2.Sc4#
      • 1...Rc4
        • 2.Sxc4#
      • 1...Bf5
        • 2.Sxf5#
      • 1...Bb7
        • 2.Sf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 3
  • Sets
    • R(a);CHECK,OGATE::QAB(G),XR(a)
    • R(a);OGATE::QAB(G)
    • P(e);N_GUARD::QAR2(G)
  • Tries
    • Try
      • S(F);XR(a)
      • Threat
        • DUALS(3)
      • Vars
        • B(g);::S(F)
      • Refutation
        • P(c);XS(F)
    • Try
      • R(D);CHECK
      • Vars
        • P(d);S_CUTR(a),XR(D)::QAR2(G)
      • Refutation
        • R(a);XR(D)
  • Actual
    • S(F);
    • Threat
      • R1(D),XP(d)
    • Vars
      • R(a);CHECK,OGATE::QAB(G),XR(a)
      • K(b);P_SPINR(a),S_FLIGHT,XR(D)::R(H)+S(F),DCHECK
      • K(b);P_SPINP(d),S_FLIGHT::QAB(G)+S(F)
      • R(a);N_GUARD::S(F),XR(a)
      • B(g);N_GUARD::S(F),XB(g)
      • B(g);N_GUARD::S(F)
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