MESON Chess Problem Database

Problem Display
PID: 245872 (8/1N1B4/4R3/2pk4/rrR1n3/1p1np3/4P2K/B1Q5 w - - 0 1)

Dyachuk, Vasyl Vasilovich

Shakhmatna misl, 1996

8/1N1B4/4R3/2pk4/rrR1n3/1p1np3/4P2K/B1Q5

#2

8 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Se1
      • 2.Re5#
    • 1...Sdf2
      • 2.Re5#
    • 1...Sf4
      • 2.Re5#
    • 1...Se5
      • 2.Rxe5#
    • 1...Sd2
      • 2.Rd6#
    • 1...Sef2
      • 2.Rd6#
    • 1...Sg3
      • 2.Rd6#
    • 1...Sg5
      • 2.Rd6#
    • 1...Sd6
      • 2.Rxd6#
    • 1...Sf6
      • 2.Rd6#
  • Tries
    • 1.Rd4+?
      • 1...cxd4
        • 2.Qc6#
      • 1...Rxd4!
    • 1.Rxc5+?
      • 1...Sdxc5
        • 2.Re5#
      • 1...Sexc5!
    • 1.Qd1?
      • threat
        • 2.Qxd3#
      • 1...Kxc4
        • 2.Qxd3#
      • 1...Rxc4
        • 2.Re5#
      • 1...Sf2
        • 2.Rxc5#
      • 1...Sd2!
  • Keys
    • 1.Qh1!
      • threat
        • 2.Qxe4#
      • 1...Kxc4
        • 2.Qxe4#
      • 1...Rxc4
        • 2.Rd6#
      • 1...Sf2
        • 2.Rxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 9
  • Sets
    • S(b);N_GUARD::R1(F)
    • S(b);N_GUARD::R1(F),XS(b)
    • S(f);N_GUARD::R1(F)
    • S(f);N_GUARD::R1(F),XS(f)
  • Tries
    • Try
      • R(E);CHECK
      • Vars
        • P(g);OGATE,XR(E)::QAB1(B)
      • Refutation
        • R(e);XR(E)
    • Try
      • R(E);CHECK,XP(g)
      • Vars
        • S(b);XR(E)::R1(F)
      • Refutation
        • S(f);XR(E)
    • Try
      • Q(B);P_PINS(b)
      • Threat
        • QAR2(B),XS(b)
      • Vars
        • K(h);N_SPINS(b),S_FLIGHT,XR(E)::QAB1(B),XS(b)
        • R(e);SBLOCK,XR(E)::R1(F)
        • S(f);N_GUARD::R1(E),XP(g)
      • Refutation
        • S(f);N_SPINS(b)
  • Actual
    • Q(B);P_PINS(f)
    • Threat
      • QAB1(B),XS(f)
    • Vars
      • K(h);N_SPINS(f),S_FLIGHT,XR(E)::QAR2(B),XS(f)
      • R(e);SBLOCK,XR(E)::R1(F)
      • S(b);N_GUARD::R1(E),XP(g)
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