MESON Chess Problem Database

Problem Display
PID: 265074 (3R4/B5R1/p2n4/p1q2N1Q/p1kPp3/Pp6/1PrP4/4N2K w - - 0 1)

Gamma, Alex

Schweizerische Schachzeitung, 2013

3R4/B5R1/p2n4/p1q2N1Q/p1kPp3/Pp6/1PrP4/4N2K

#2

11 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qb4
      • 2.Se3#
    • 1...Qb5
      • 2.Se3#
      • 2.Sxd6#
    • 1...Qd5
      • 2.Qe2#
    • 1...Qc6
      • 2.Se3#
    • 1...Qc7
      • 2.Se3#
    • 1...Qc8
      • 2.Se3#
      • 2.Sxd6#
    • 1...Sb5
      • 2.Se3#
      • 2.Qe2#
    • 1...Sxf5
      • 2.Qe2#
    • 1...Sb7
      • 2.Qe2#
    • 1...Sf7
      • 2.Qe2#
    • 1...Sc8
      • 2.Qe2#
    • 1...Se8
      • 2.Qe2#
  • Tries
    • 1.Se3+?
      • 1...Kxd4
        • 2.Rxd6#
        • 2.Qd5#
      • 1...Kb5!
  • Keys
    • 1.Rc7!
      • threat
        • 2.Rxc5#
      • 1...Kb5
        • 2.Sxd6#
      • 1...Kd5
        • 2.Qf7#
      • 1...Qxc7
        • 2.Se3#
      • 1...Qc6
        • 2.Se3#
        • 2.Sxd6#
      • 1...Sb7
        • 2.Qe2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • Q(g);::S(G)
    • Q(g);SBLOCK::QAB(H)
    • S(i);XS(G)::QAB(H)
    • S(i);::QAB(H)
  • Tries
    • Try
      • S(G);CHECK
      • Refutation
        • K(d);P_SPINQ(g),S_FLIGHT
  • Actual
    • R(J);P_PINQ(g)
    • Threat
      • R1(J),XQ(g)
    • Vars
      • K(d);N_GUARD,N_SPINQ(g),S_FLIGHT::S(G),XS(i)
      • K(d);N_GUARD,N_SPINQ(g),P_SPINS(i),S_FLIGHT::QAB(H)
      • Q(g);N_SPINQ(g),XR(J)::S(G)
      • S(i);::QAB(H)
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Developed and maintained by Brian Stephenson.
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