MESON Chess Problem Database

Problem Display
PID: 200771 (1K1n4/8/kBp5/pp6/1RQ5/8/6p1/8 w - - 0 1)

Sawionok, Aleksandr

Stuttgarter Nachrichten, 2001

(First published on Sat Feb 17 2001)

1K1n4/8/kBp5/pp6/1RQ5/8/6p1/8

#2

4 + 6

16210 Problemschach-Jahrbuch (2001) 2002

SOLUTION

  • SOUND
  • Sets
    • 1...c5
      • 2.Qxb5#
  • Tries
    • 1.Qf7?
      • threat
        • 2.Qa7#
      • 1...Kxb6
        • 2.Qa7#
      • 1...Sb7
        • 2.Qxb7#
      • 1...Sxf7!
    • 1.Qxc6?
      • threat
        • 2.Bxd8#
        • 2.Qxb5#
      • 1...axb4
        • 2.Bxd8#
      • 1...g1Q
        • 2.Qxb5#
      • 1...g1B
        • 2.Qxb5#
      • 1...Se6
        • 2.Bg1#
        • 2.Bf2#
        • 2.Be3#
        • 2.Bd4#
        • 2.Bc5#
        • 2.Ba7#
        • 2.Bc7#
        • 2.Bd8#
        • 2.Qxb5#
        • 2.Qb7#
      • 1...Sb7
        • 2.Bg1#
        • 2.Bf2#
        • 2.Be3#
        • 2.Bd4#
        • 2.Bc5#
        • 2.Ba7#
        • 2.Bc7#
        • 2.Bd8#
        • 2.Qxb5#
        • 2.Qxb7#
      • 1...Sf7
        • 2.Bg1#
        • 2.Bf2#
        • 2.Be3#
        • 2.Bd4#
        • 2.Bc5#
        • 2.Ba7#
        • 2.Bc7#
        • 2.Bd8#
        • 2.Qxb5#
        • 2.Qb7#
      • 1...Sxc6+!
  • Keys
    • 1.Bg1!
      • 1...axb4
        • 2.Qa2#
      • 1...bxc4
        • 2.Rb6#
      • 1...a4
        • 2.Rxa4#
      • 1...c5
        • 2.Qxb5#
      • 1...Se6
        • 2.Qxc6#
      • 1...Sb7
        • 2.Qxc6#
      • 1...Sf7
        • 2.Qxc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • P(e);N_GUARD::QAB1(B),XP(c)
  • Tries
    • Try
      • Q(B);N_PINP(c)
      • Threat
        • QAR1(B)
      • Vars
        • K(d);P-FLIGHT,P_SPINP(c),XB(C)::QAB1(B)
        • S(f);N_GUARD::QAB1(B),XS(f)
      • Refutation
        • S(f);XQ(B)
    • Try
      • Q(B);N_PINP(c),XP(e)
      • Threat
        • DUALS(2)
      • Vars
        • P(b);XR(A)::QAR(B)+B(C),XS(f)
        • P(a);::QAB1(B),XP(c)
      • Refutation
        • S(f);CHECK,XQ(B)
  • Actual
    • B(C);
    • Vars
      • P(b);OGATEB,XR(A)::QAR(B)
      • P(c);N_SPINP(c),OGATE,XQ(B)::R1(A)
      • P(b);OGATEB::R(A),XP(b)
      • P(e);N_GUARD::QAB1(B),XP(c)
      • S(f);N_GUARD::QAR2(B),XP(e)
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