MESON Chess Problem Database

Problem Display
PID: 143545 (2N5/2R5/2N5/rppk1PKR/b5Q1/b1p4p/1pP3r1/7B w - - 0 1)

Maleika, Gerhard

2nd Prize, Schweizerische Schachzeitung, 2004-2005

2N5/2R5/2N5/rppk1PKR/b5Q1/b1p4p/1pP3r1/7B

#2

9 + 10

23 Die Schwalbe 2011

SOLUTION

  • SOUND
  • Sets
    • 1...h2
      • 2.Bxg2#
  • Tries
    • 1.Kf6?
      • threat
        • 2.S6e7#
      • 1...c4
        • 2.Qd4#
      • 1...Ra6!
    • 1.Rh6?
      • threat
        • 2.Sb6#
        • 2.S8e7#
        • 2.Rd6#
        • 2.Rd7#
      • 1...Ra6
        • 2.S8e7#
        • 2.Rd6#
        • 2.Rd7#
      • 1...Ra7
        • 2.Sb6#
        • 2.S8e7#
        • 2.Rd6#
      • 1...c4!
    • 1.Qxg2+?
      • 1...Kc4
        • 2.Sb6#
        • 2.Sd6#
        • 2.Rh4#
        • 2.Qf1#
        • 2.Qe4#
        • 2.Qd5#
        • 2.Qe2#
        • 2.Qg4#
      • 1...hxg2!
  • Keys
    • 1.Kf4!
      • threat
        • 2.Qg8#
      • 1...Kc4
        • 2.Sb6#
      • 1...c4
        • 2.f6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • P(e);N_GUARD::B(A),XR(b)
  • Tries
    • Try
      • K(E);N_SPINQ(C),S_FLIGHT
      • Threat
        • S(G)
      • Vars
        • P(i);N_GUARD::QAR1(C)
      • Refutation
        • R(g);P_PINS(G)
    • Try
      • R(F);
      • Threat
        • DUALS(4)
      • Refutation
        • P(i);
    • Try
      • Q(C);CHECK,N_SPINQ(C),XR(b)
      • Refutation
        • P(e);P_SPINP(e),XQ(C)
  • Actual
    • K(E);N_SPINQ(C),S_FLIGHT
    • Threat
      • QAB(C)
    • Vars
      • K(j);N_SPINR(b),S_FLIGHT::S(I)
      • P(i);SBLOCK::R(F)+P(D)
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