MESON Chess Problem Database

Problem Display
PID: 238832 (3K4/8/5ppP/3b1k1p/Q3R1N1/6p1/3BN2b/8 w - - 0 1)

Janevski, Zivko

Schach, 2013

3K4/8/5ppP/3b1k1p/Q3R1N1/6p1/3BN2b/8

#2

7 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bg1
      • 2.Sxg3#
    • 1...Bxe4
      • 2.Qd7#
  • Tries
    • 1.Rf4+?
      • 1...Ke6
        • 2.Rxf6#
        • 2.Qd7#
      • 1...Kg5!
    • 1.Re6?
      • threat
        • 2.Rxf6#
      • 1...Kxe6
        • 2.Qd7#
      • 1...Bxe6
        • 2.Qf4#
      • 1...hxg4
        • 2.Sd4#
      • 1...Be4
        • 2.Qxe4#
      • 1...Bc4!
    • 1.Qc2?
      • threat
        • 2.Sd4#
      • 1...Bxe4
        • 2.Qc8#
      • 1...Bg1
        • 2.Sxg3#
      • 1...g5!
    • 1.Qd7+?
      • 1...Be6
        • 2.Qxe6#
      • 1...Kxe4!
  • Keys
    • 1.Qe8!
      • threat
        • 2.Sd4#
      • 1...Bxe4
        • 2.Qd7#
      • 1...Be6
        • 2.Qxe6#
      • 1...Bg1
        • 2.Sxg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(a);N_GUARD::S(B),XP(b)
    • B(c);N_GUARD,SBLOCK,XR(D)::QAB(C)
  • Tries
    • Try
      • R(D);CHECK
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • R(D);
      • Threat
        • R1(D),XP(f)
      • Vars
        • K(d);OGATEB,S_FLIGHT,XR(D)::QAB1(C)
        • B(c);SBLOCK,XR(D)::QAR1(C)
        • P(e);SBLOCK,XS(E)::S(B)
        • B(c);N_GUARD::QAB1(C),XB(c)
      • Refutation
        • B(c);
    • Try
      • Q(C);
      • Threat
        • S(B)
      • Vars
        • B(c);N_GUARD,P_SPINB(c),SBLOCK,XR(D)::QAB(C)
        • B(a);N_GUARD::S(B),XP(b)
      • Refutation
        • P(g);
    • Try
      • Q(C);CHECK
      • Vars
        • B(c);N_GUARD,P_SPINB(c)::QAB1(C),XB(c)
      • Refutation
        • K(d);S_FLIGHT,XR(D)
  • Actual
    • Q(C);
    • Threat
      • S(B)
    • Vars
      • B(c);N_GUARD,SBLOCK,XR(D)::QAB(C)
      • B(c);N_GUARD::QAB1(C),XB(c)
      • B(a);N_GUARD::S(B),XP(b)
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