MESON Chess Problem Database

Problem Display
PID: 179189 (3Q3K/1b3pp1/n2R3b/ppN3r1/pkq5/p4p2/P2P4/2R1B3 w - - 0 1)

Dyachuk, Vasyl Vasilovich

4th Prize, Phenix, 2015

3Q3K/1b3pp1/n2R3b/ppN3r1/pkq5/p4p2/P2P4/2R1B3

#2

8 + 13

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc5
      • 2.d4#
    • 1...Qd3
      • 2.Sxd3#
    • 1...Qd5
      • 2.d3#
      • 2.d4#
    • 1...Qe6
      • 2.Sd3#
    • 1...Qd4
      • 2.Rxd4#
    • 1...Qf4
      • 2.Sd3#
    • 1...Qg4
      • 2.Sd3#
      • 2.d3#
      • 2.d4#
    • 1...Qh4
      • 2.Sd3#
    • 1...Be4
      • 2.Sxa6#
    • 1...Bd5
      • 2.Sxa6#
    • 1...Bc6
      • 2.Sxa6#
    • 1...Ba8
      • 2.Sxa6#
  • Tries
    • 1.Rb1+?
      • 1...Kxc5
        • 2.Qb6#
      • 1...Qb3!
    • 1.Rxc4+?
      • 1...bxc4
        • 2.Qb6#
      • 1...Kxc4!
    • 1.d3+?
      • 1...Kxc5
        • 2.Qb6#
        • 2.d4#
      • 1...Qc3!
  • Keys
    • 1.Rd4!
      • threat
        • 2.Sd3#
      • 1...Kxc5
        • 2.Qd6#
      • 1...Qxd4
        • 2.Qxd4#
      • 1...Rxc5
        • 2.Rb1#
      • 1...Sxc5
        • 2.d3#
      • 1...Be4
        • 2.Sxa6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • K(d);P_SPINQ(e),S_FLIGHT,XS(E)::P(D)
    • Q(e);N_GUARD::S(E),XQ(e)
    • Q(e);N_GUARD::S(E)
    • Q(e);OGATEB::R(F),XQ(e)
    • B(k);N_GUARD::S(E),XS(i)
  • Tries
    • Try
      • R(A);CHECK
      • Vars
        • K(d);S_FLIGHT,XS(E)::QAB1(G)
      • Refutation
        • Q(e);P_SPINQ(e)
    • Try
      • R(A);CHECK,XQ(e)
      • Vars
        • P(g);SBLOCK,XR(A)::QAR2(G)
      • Refutation
        • K(d);P-FLIGHT,XR(A)
    • Try
      • P(D);CHECK
      • Refutation
        • Q(e);P_SPINQ(e)
  • Actual
    • R(F);P_PINQ(e)
    • Threat
      • S(E)
    • Vars
      • K(d);OGATEB,S_FLIGHT,XS(E)::QAB1(G)
      • Q(e);N_SPINQ(e),OGATE,XR(F)::QAR2(G),XQ(e)
      • R(h);SBLOCK,XS(E)::R(A)
      • S(i);SBLOCK,XS(E)::B(B)+P(D)
      • B(k);N_GUARD::S(E),XS(i)
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