MESON Chess Problem Database

Problem Display
PID: 238826 (3N4/2Q5/r2pN1p1/1r3b1R/3Pk1p1/1p2P1R1/1n6/5BK1 w - - 0 1)

Janevski, Zivko

Problemist Ukraini, 2013

3N4/2Q5/r2pN1p1/1r3b1R/3Pk1p1/1p2P1R1/1n6/5BK1

#2

9 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Bg2#
    • 1...Rd5
      • 2.Sg5#
    • 1...Sd3
      • 2.Bg2#
    • 1...d5
      • 2.Sg5#
      • 2.Qf4#
      • 2.Qe5#
  • Tries
    • 1.Sc5+?
      • 1...Kd5
        • 2.Qf7#
      • 1...dxc5
        • 2.Qe5#
      • 1...Rxc5!
    • 1.Qxd6?
      • threat
        • 2.Sg5#
      • 1...Bxe6
        • 2.Qf4#
      • 1...g5
        • 2.Sxg5#
      • 1...Rxd6!
    • 1.Qc2+?
      • 1...Kd5
        • 2.Sf4#
        • 2.Sc7#
        • 2.Bg2#
        • 2.Qg2#
        • 2.e4#
      • 1...Sd3
        • 2.Bg2#
        • 2.Qg2#
      • 1...bxc2!
    • 1.Qc3?
      • threat
        • 2.Bg2#
      • 1...Kd5
        • 2.Bg2#
      • 1...Ra1!
    • 1.Qc4?
      • threat
        • 2.Sg5#
        • 2.Bg2#
      • 1...Bxe6
        • 2.Bg2#
      • 1...Ra1
        • 2.Sg5#
      • 1...g5
        • 2.Sxg5#
        • 2.Bg2#
      • 1...Sxc4!
    • 1.Qc6+?
      • 1...Rd5
        • 2.Sg5#
      • 1...d5
        • 2.Sg5#
      • 1...Rxc6!
  • Keys
    • 1.Qf7!
      • threat
        • 2.Sg5#
      • 1...Kd5
        • 2.Sc5#
      • 1...Bxe6
        • 2.Qf4#
      • 1...g5
        • 2.Sxg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • K(c);P_SPINB(f),S_FLIGHT::B(A)
    • R(e);SBLOCK::S(G)
    • S(a);SBLOCK::B(A)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(c);P_SPINB(f),S_FLIGHT::QAB(H)
        • P(h);OGATE,XS(G)::QAR1(H)
      • Refutation
        • R(e);XS(G)
    • Try
      • Q(H);XP(h)
      • Threat
        • S(G)
      • Vars
        • B(f);XS(G)::QAR1(H)
        • P(i);::S(G),XP(i)
      • Refutation
        • R(g);XQ(H)
    • Try
      • Q(H);CHECK
      • Refutation
        • P(b);XQ(H)
    • Try
      • Q(H);
      • Threat
        • B(A)
      • Vars
        • K(c);P_SPINB(f),S_FLIGHT::B(A)
      • Refutation
        • R(g);P_PINB(A)
    • Try
      • Q(H);
      • Threat
        • DUALS(2)
      • Vars
        • B(f);XS(G)::B(A)
        • R(g);P_PINB(A)::S(G)
      • Refutation
        • S(a);XQ(H)
    • Try
      • Q(H);CHECK
      • Vars
        • R(e);P_SPINR(e)::S(G)
        • P(h);P_SPINP(h)::S(G)
      • Refutation
        • R(g);XQ(H)
  • Actual
    • Q(H);
    • Threat
      • S(G)
    • Vars
      • K(c);P_SPINB(f),S_FLIGHT::QAB(H)+S(G)
      • B(f);OGATE,XS(G)::QAR1(H)
      • P(i);::S(G),XP(i)
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