MESON Chess Problem Database

Problem Display
PID: 238812 (1nB1KB2/1pp2P2/2kq3Q/PpP4R/1p4R1/1P2N3/n4b2/8 w - - 0 1)

Janevski, Zivko

Problemist Ukraini, 2012

1nB1KB2/1pp2P2/2kq3Q/PpP4R/1p4R1/1P2N3/n4b2/8

#2

11 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qe6+
      • 2.Qxe6#
    • 1...Qf6
      • 2.Qxf6#
    • 1...Qg6
      • 2.Rxg6#
      • 2.Qxg6#
    • 1...Qxh6
      • 2.Rxh6#
    • 1...Sa6
      • 2.Bd7#
    • 1...Sd7
      • 2.Bxd7#
  • Tries
    • 1.Sd5?
      • threat
        • 2.Se7#
      • 1...Kxc5
        • 2.Sxb4#
      • 1...Bh4!
    • 1.Bf5?
      • threat
        • 2.Be4#
      • 1...Qe6+
        • 2.Qxe6#
      • 1...Kxc5
        • 2.Bd7#
      • 1...Sc3!
    • 1.Bxd6?
      • threat
        • 2.Bh2#
        • 2.Bg3#
        • 2.Bf4#
        • 2.Be7#
        • 2.Bf8#
      • 1...Bxe3
        • 2.Bf4#
      • 1...cxd6
        • 2.Qxd6#
      • 1...Bg3
        • 2.Bxg3#
        • 2.Bf4#
      • 1...Sd7
        • 2.Bxd7#
      • 1...Bh4!
    • 1.a6?
      • threat
        • 2.Bxb7#
      • 1...Qe6+
        • 2.Qxe6#
      • 1...Sxa6
        • 2.Bd7#
      • 1...b6
        • 2.Bb7#
      • 1...bxa6!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Se7#
      • 1...Kxc5
        • 2.Sd4#
      • 1...Kd5
        • 2.Se7#
      • 1...Bh4
        • 2.Sd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • Q(f);CHECK,OGATEB::QAR2(G),XQ(f)
    • Q(f);OGATEB::QAR(G),XQ(f)
    • Q(f);N_SPINQ(f),OGATE,XQ(G)::R(F),XQ(f)
    • S(i);N_GUARD::B(I)
    • S(i);N_GUARD::B(I),XS(i)
  • Tries
    • Try
      • S(B);
      • Threat
        • S(B)
      • Vars
        • K(e);P-FLIGHT,XP(E)::R(F)+S(B),XP(c)
      • Refutation
        • B(b);
    • Try
      • B(I);
      • Threat
        • B(I)
      • Vars
        • Q(f);CHECK,OGATEB::QAR2(G),XQ(f)
        • K(e);P-FLIGHT,XP(E)::R(F)+B(I)
      • Refutation
        • S(a);
    • Try
      • B(K);XQ(f)
      • Threat
        • DUALS(5)
      • Vars
        • B(b);XS(B)::QAR(G)+B(K)
        • P(h);OGATE,P_SPINP(h),XB(K)::QAR1(G),XP(h)
        • S(i);N_GUARD::B(I),XS(i)
      • Refutation
        • B(b);
    • Try
      • P(D);
      • Threat
        • B(I),XP(g)
      • Vars
        • Q(f);CHECK,OGATEB::QAR2(G),XQ(f)
        • S(i);N_GUARD,XP(D)::B(I)
        • P(g);::B(I)
      • Refutation
        • P(g);XP(D)
  • Actual
    • S(B);
    • Threat
      • S(B)
    • Vars
      • K(e);P-FLIGHT,XP(E)::R(F)+S(B)
      • K(e);N_SPINQ(f),S_FLIGHT::R(F)+S(B),DCHECK
      • B(b);N_GUARD::S(B)
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