MESON Chess Problem Database

Problem Display
PID: 140867 (1nbB2R1/1r1kp3/pp6/3K1P2/2Q1Bb2/3R4/8/8 w - - 0 1)

Subotic, Miroslav

Liga Problemista, 1997

1nbB2R1/1r1kp3/pp6/3K1P2/2Q1Bb2/3R4/8/8

#2

7 + 8

6490 yacpdb 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Bc1
      • 2.Ke5#
    • 1...Bd2
      • 2.Ke5#
    • 1...Be5
      • 2.Kxe5#
    • 1...Bg5
      • 2.Ke5#
    • 1...Bh6
      • 2.Ke5#
    • 1...Sc6
      • 2.Qxc6#
    • 1...e5
      • 2.fxe5 ep#
    • 1...e6+
      • 2.fxe6#
  • Tries
    • 1.Qb5+?
      • 1...Sc6
        • 2.Qxc6#
      • 1...axb5!
    • 1.Qa4+?
      • 1...Sc6
        • 2.Qxc6#
      • 1...b5!
  • Keys
    • 1.Kd4!
      • threat
        • 2.Qe6#
      • 1...Be3+
        • 2.Kxe3#
      • 1...Be5+
        • 2.Kxe5#
      • 1...Sc6+
        • 2.Qxc6#
      • 1...e5+
        • 2.Kc3#
      • 1...Kd6
        • 2.Qd5#
      • 1...e6
        • 2.Qxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • B(a);::R(A)+K(D)
    • B(a);::R(A)+K(D),XB(a)
    • S(g);N_GUARD::QAB1(B),XS(g)
    • P(f);OGATE::P(E),XP(f),EP
    • P(f);CHECK,OGATE::P(E),XP(f)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • S(g);N_GUARD,P_SPINS(g)::QAB1(B),XS(g)
      • Refutation
        • P(b);XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • S(g);N_GUARD,P_SPINS(g)::QAB1(B),XS(g)
      • Refutation
        • P(c);P_SPINP(c)
  • Actual
    • K(D);P-FLIGHT
    • Threat
      • QAB1(B)
    • Vars
      • B(a);CHECK::R(A)+K(D),XB(a)
      • S(g);CHECK,N_GUARD::QAB1(B),XS(g)
      • P(f);CHECK,S_CUTB(a)::R(A)+K(D)
      • K(e);P-FLIGHT::QAR1(B)
      • P(f);::QAB1(B),XP(f)
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