MESON Chess Problem Database

Problem Display
PID: 15730 (3n4/6p1/5pN1/1Q6/2pPk2K/R7/3ppB2/3N3b w - - 0 1)

Shanshin, Valery Yurevich

Slesarenko, Anatoly Vasilevich

2nd Prize, Moscow Ty., 1987

3n4/6p1/5pN1/1Q6/2pPk2K/R7/3ppB2/3N3b

#2

7 + 8

4849 The Sushkov Theme 1999

SOLUTION

  • SOUND
  • Sets
    • 1...f5
      • 2.Qe5#
  • Tries
    • 1.Sc3+?
      • 1...Kd3
        • 2.Qb1#
      • 1...Kf3!
    • 1.Se3?
      • threat
        • 2.Qd5#
      • 1...Kf3
        • 2.Qf5#
      • 1...Kxd4
        • 2.Qxc4#
      • 1...c3!
    • 1.Rf3?
      • threat
        • 2.Qf5#
      • 1...Kxf3
        • 2.Qd5#
      • 1...f5
        • 2.Qxf5#
      • 1...Bxf3!
    • 1.Qe8+?
      • 1...Kf5
        • 2.Se3#
      • 1...Se6
        • 2.Qxe6#
      • 1...Kd5!
  • Keys
    • 1.Ra5!
      • threat
        • 2.Qf5#
      • 1...Kd3
        • 2.Qb1#
      • 1...Kf3
        • 2.Qd5#
      • 1...f5
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(f);N_GUARD::QAR1(F)
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • K(e);P_SPINP(d),S_FLIGHT::QAB(F)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • S(A);
      • Threat
        • QAB1(F)
      • Vars
        • K(e);S_FLIGHT::QAR2(F)
        • K(e);OGATEB,P-FLIGHT,XP(D)::QAR1(F),XP(d)
      • Refutation
        • P(d);
    • Try
      • R(C);
      • Threat
        • QAB1(F)
      • Vars
        • K(e);S_FLIGHT,XR(C)::QAB(F)
        • P(f);::QAB1(F),XP(f)
      • Refutation
        • B(a);XR(C)
    • Try
      • Q(F);CHECK
      • Vars
        • K(e);S_FLIGHT::S(A)
        • S(h);N_GUARD,P_SPINS(h)::QAR2(F),XS(h)
      • Refutation
        • K(e);S_FLIGHT
  • Actual
    • R(C);
    • Threat
      • QAB1(F)
    • Vars
      • K(e);P_SPINP(d),S_FLIGHT::QAB(F)
      • K(e);S_FLIGHT::QAB(F)
      • P(f);::QAB1(F),XP(f)
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