MESON Chess Problem Database

Problem Display
PID: 116252 (1R5B/1B2K3/pN4b1/N2Rn3/pk6/1p1p1p2/2p5/2Q5 w - - 0 1)

Gvozdjak, Peter

Brabec-50 JT, 1988

1R5B/1B2K3/pN4b1/N2Rn3/pk6/1p1p1p2/2p5/2Q5

#2

8 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sc4
      • 2.Sc6#
    • 1...Sg4
      • 2.Sc6#
    • 1...Sc6+
      • 2.Sxc6#
    • 1...Sd7
      • 2.Sc6#
    • 1...Sf7
      • 2.Sc6#
    • 1...b2
      • 2.Qxb2#
    • 1...a3
      • 2.Qd2#
  • Tries
    • 1.Sc6+?
      • 1...Kc3
        • 2.Bxe5#
        • 2.Rc5#
      • 1...Sxc6+!
    • 1.Sbc4?
      • threat
        • 2.Qd2#
      • 1...Sc6+
        • 2.Bxc6#
      • 1...Kc3
        • 2.Qd2#
      • 1...Sxc4
        • 2.Sc6#
      • 1...d2
        • 2.Qxd2#
      • 1...a3!
    • 1.Bxe5?
      • threat
        • 2.Sc6#
      • 1...b2
        • 2.Qxb2#
      • 1...Be8!
  • Keys
    • 1.Bc6!
      • threat
        • 2.Sxa4#
      • 1...Sxc6+
        • 2.Sxc6#
      • 1...Kc3
        • 2.Sxa4#
      • 1...b2
        • 2.Qxb2#
      • 1...Sc4
        • 2.Sbxc4#
      • 1...Sd7
        • 2.Sxd7#
      • 1...a3
        • 2.Sa4#
        • 2.Qd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • S(g);N_GUARD::S(B)
    • S(g);CHECK,N_GUARD::S(B),XS(g)
    • P(b);OGATEB::QAR2(A),XP(b)
    • P(e);SBLOCK::QAB(A)
  • Tries
    • Try
      • S(B);CHECK
      • Refutation
        • S(g);CHECK,XS(B)
    • Try
      • S(D);
      • Threat
        • QAB(A)
      • Vars
        • S(g);CHECK::R(G)+B(E),XS(g)
        • K(f);P_SPINP(a),P_SPINS(g),S_FLIGHT::QAB1(A)
        • S(g);N_GUARD,SBLOCK,XS(D)::S(B)
        • P(c);::QAB(A),XP(c)
      • Refutation
        • P(e);
    • Try
      • B(H);XS(g)
      • Threat
        • S(B)
      • Vars
        • P(b);OGATEB::QAR2(A),XP(b)
      • Refutation
        • B(i);
  • Actual
    • B(E);
    • Threat
      • R(G)+S(D),XP(e)
    • Vars
      • S(g);CHECK,XB(E)::S(B),XS(g)
      • K(f);P_SPINP(a),P_SPINS(g),S_FLIGHT::S(D),XP(e)
      • P(b);OGATEB::QAR2(A),XP(b)
      • S(g);::R(G)+S(D),XS(g)
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Developed and maintained by Brian Stephenson.
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