MESON Chess Problem Database

Problem Display
PID: 258406 (q7/bp1pNQ2/8/r5p1/p7/2P1kPp1/4P3/1n2K3 w - - 0 1)

Markanskas, N

Die Schwalbe, 1931

q7/bp1pNQ2/8/r5p1/p7/2P1kPp1/4P3/1n2K3

#2

6 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.Sxd5#
    • 1...Ra6
      • 2.Sd5#
    • 1...Bc5
      • 2.Sd5#
  • Tries
    • 1.Qe6+?
      • 1...Kf4
        • 2.Sg6#
        • 2.Qe4#
      • 1...Re5
        • 2.Sd5#
        • 2.Qxe5#
      • 1...dxe6!
  • Keys
    • 1.Qd5!
      • threat
        • 2.Qe4#
      • 1...Kf4
        • 2.Qe4#
      • 1...Rxd5
        • 2.Sxd5#
      • 1...Sxc3
        • 2.Qd2#
      • 1...Sd2
        • 2.Qxd2#
      • 1...b5
        • 2.Qxg5#
      • 1...b6
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • R(e);N_GUARD::S(E),XR(e)
    • R(e);N_GUARD::S(E)
    • B(g);S_CUTR(e)::S(E)
  • Tries
    • Try
      • Q(F);CHECK
      • Refutation
        • P(i);XQ(F)
  • Actual
    • Q(F);
    • Threat
      • QAR1(F)
    • Vars
      • K(b);S_FLIGHT::QAR1(F)
      • R(e);XQ(F)::S(E),XR(e)
      • S(a);N_GUARD,XP(C)::QAB1(F)
      • S(a);N_GUARD::QAB1(F),XS(a)
      • P(h);S_CUTR(e)::QAB(F),XP(f)
      • P(h);S_CUTB(g)::QAB1(F)
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