MESON Chess Problem Database

Problem Display
PID: 157310 (b3R3/B1p1P3/2k1p3/1N1NK1pr/p5p1/2PB3p/8/R2Q4 w - - 0 1)

Dyachuk, Vasyl Vasilovich

Hlas l'udu, 1991

b3R3/B1p1P3/2k1p3/1N1NK1pr/p5p1/2PB3p/8/R2Q4

#2

10 + 9

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Tries
    • 1.Sd4+?
      • 1...Kd7
        • 2.Sf6#
        • 2.Rd8#
      • 1...Kb7!
    • 1.Sb4+?
      • 1...Kb7
        • 2.Rb8#
      • 1...Kd7!
    • 1.Sf6?
      • threat
        • 2.Qh1#
      • 1...g3
        • 2.Qf3#
      • 1...Kb7!
    • 1.Sdxc7?
      • threat
        • 2.Be4#
      • 1...Kb7
        • 2.Be4#
        • 2.Qh1#
      • 1...Kd7!
    • 1.Rc8?
      • threat
        • 2.Rxc7#
      • 1...Kd7
        • 2.e8Q#
      • 1...Kb7!
    • 1.Qxa4?
      • threat
        • 2.Sd6#
      • 1...Kb7
        • 2.Qa6#
      • 1...Kd7!
    • 1.Qh1?
      • threat
        • 2.Sf6#
      • 1...Kb7
        • 2.Sdxc7#
      • 1...Kd7
        • 2.Sf6#
      • 1...exd5
        • 2.Qxd5#
      • 1...g3!
  • Keys
    • 1.Be4!
      • threat
        • 2.Sdxc7#
      • 1...Kxb5
        • 2.Qxa4#
      • 1...Kb7
        • 2.Sdxc7#
      • 1...Kd7
        • 2.Sf6#
      • 1...exd5
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);CHECK
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • S(F);CHECK
      • Vars
        • K(f);S_FLIGHT::R1(J)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • S(F);
      • Threat
        • QAB(B)
      • Vars
        • P(c);N_GUARD::QAB(B)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • S(F);XP(h)
      • Threat
        • B(D)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • R(J);P_PINP(h)
      • Threat
        • R1(J),XP(h)
      • Vars
        • K(f);N_SPINP(h),S_FLIGHT::P=Q
      • Refutation
        • K(f);N_SPINP(h),S_FLIGHT
    • Try
      • Q(B);XP(b)
      • Threat
        • QAB(B)+S(E)
      • Vars
        • K(f);S_FLIGHT::QAB1(B)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • Q(B);
      • Threat
        • QAB(B)+S(F)
      • Vars
        • K(f);S_FLIGHT::QAB(B)+S(F),XP(h)
        • K(f);S_FLIGHT::S(F)
        • P(g);OGATE,P_SPINP(g),XS(F)::QAB1(B),XP(g)
      • Refutation
        • P(c);
  • Actual
    • B(D);
    • Threat
      • B(D)+S(F),XP(h)
    • Vars
      • K(f);OGATEB,S_FLIGHT,XS(E)::QAB1(B),XP(b)
      • K(f);S_FLIGHT::B(D)+S(F),XP(h)
      • K(f);S_FLIGHT::QAR(B)+S(F),DCHECK
      • P(g);OGATE,P_SPINP(g),XS(F)::QAB1(B),XP(g)
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