MESON Chess Problem Database

Problem Display
PID: 188631 (1BB5/4Q3/R5Pp/7k/K2Np2r/2p5/2p3PR/2bbq2N w - - 0 1)

Yacoubian, Garen

Schweizerische Schachzeitung, 1969

1BB5/4Q3/R5Pp/7k/K2Np2r/2p5/2p3PR/2bbq2N

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qd2
      • 2.Sg3#
      • 2.Rxh4#
      • 2.Qxh4#
    • 1...Qg3
      • 2.Sxg3#
    • 1...Qf1
      • 2.Sg3#
      • 2.Rxh4#
      • 2.Qxh4#
    • 1...Qg1
      • 2.Sg3#
      • 2.Rxh4#
      • 2.Qxh4#
    • 1...Qxh1
      • 2.Qxh4#
    • 1...Qe2
      • 2.Sg3#
      • 2.Rxh4#
      • 2.Qxh4#
    • 1...Qe3
      • 2.Rxh4#
      • 2.Qxh4#
    • 1...Bb2
      • 2.Qc5#
      • 2.Qe5#
    • 1...Ba3
      • 2.Qe5#
    • 1...e3
      • 2.Qc5#
      • 2.Qe5#
  • Tries
    • 1.Se2?
      • threat
        • 2.g4#
      • 1...Qxe2
        • 2.Sg3#
        • 2.Rxh4#
        • 2.Qxh4#
      • 1...Qg3
        • 2.Shxg3#
        • 2.Sexg3#
      • 1...Qg1
        • 2.Shg3#
        • 2.Seg3#
        • 2.Rxh4#
        • 2.Qxh4#
      • 1...Bxe2!
    • 1.Sf3?
      • threat
        • 2.g4#
      • 1...Qg3
        • 2.Sxg3#
      • 1...Qg1
        • 2.Sg3#
        • 2.Rxh4#
        • 2.Qxh4#
      • 1...Bxf3!
    • 1.Sf5?
      • threat
        • 2.Sg7#
      • 1...Kg4
        • 2.Sfg3#
        • 2.Sg7#
      • 1...e3+!
  • Keys
    • 1.Se6!
      • threat
        • 2.Sg7#
      • 1...e3+
        • 2.Sf4#
      • 1...Kg4
        • 2.Sf4#
        • 2.Sg7#
      • 1...Kxg6
        • 2.Sf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • Q(c);N_GUARD::S(A),XQ(c)
    • Q(c);N_GUARD,XS(A)::QAR1(H),XR(g)
    • B(a);N_GUARD::QAR(H)
  • Tries
    • Try
      • S(E);
      • Threat
        • P(B)
      • Refutation
        • B(b);XS(E)
    • Try
      • S(E);
      • Threat
        • P(B)
      • Vars
        • Q(c);N_GUARD::S(A),XQ(c)
      • Refutation
        • B(b);XS(E)
    • Try
      • S(E);
      • Threat
        • S(E)
      • Refutation
        • P(f);CHECK
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • P(f);CHECK,S_CUTB(a)::S(E)
      • K(h);N_SPINR(g),S_FLIGHT,XP(G)::R(F)+S(E),DCHECK
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