MESON Chess Problem Database

Problem Display
PID: 144093 (KB6/6pB/2Q1p1n1/2pN4/R1n1k1b1/2p1p3/2P3P1/3r3N w - - 0 1)

Pimenov, Sergey Ivanovich

Pimenov, Vitaly Ivanovich

Magyar Sakkvilag, 1930

KB6/6pB/2Q1p1n1/2pN4/R1n1k1b1/2p1p3/2P3P1/3r3N

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Sg3#
  • Tries
    • 1.Sxc3+?
      • 1...Kd4
        • 2.Sb5#
      • 1...Kf5!
    • 1.Sf6+?
      • 1...Kd4
        • 2.Qe4#
        • 2.Qd7#
        • 2.Qd6#
      • 1...Kf5!
    • 1.Se7+?
      • 1...Rd5
        • 2.Rxc4#
      • 1...Kd4!
    • 1.Rxc4+?
      • 1...Rd4
        • 2.Sg3#
        • 2.Se7#
      • 1...Kf5!
    • 1.Qxc5?
      • threat
        • 2.Sg3#
        • 2.Sxc3#
      • 1...Rxh1
        • 2.Sxc3#
      • 1...Rxd5
        • 2.Sg3#
      • 1...exd5
        • 2.Sg3#
      • 1...Rd3
        • 2.Sg3#
      • 1...e5
        • 2.Sg3#
      • 1...Kf5!
  • Keys
    • 1.Qd6!
      • threat
        • 2.Qe5#
      • 1...Kd4
        • 2.Sf6#
      • 1...Kf5
        • 2.Qf4#
      • 1...Rxd5
        • 2.Qf4#
      • 1...Rd4
        • 2.Sg3#
      • 1...Bf5
        • 2.Sxc3#
      • 1...e5
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • R(a);N_SPINS(d),P_SPINS(i),SBLOCK::S(A)
  • Tries
    • Try
      • S(E);CHECK,XP(b)
      • Vars
        • K(e);P-FLIGHT::S(E)
      • Refutation
        • K(e);N_SPINS(d),P_SPINS(i),S_FLIGHT
    • Try
      • S(E);CHECK
      • Refutation
        • K(e);N_SPINS(d),P_SPINS(i),S_FLIGHT
    • Try
      • S(E);CHECK
      • Vars
        • R(a);P_SPINR(a)::R(D),XS(d)
      • Refutation
        • K(e);P-FLIGHT
    • Try
      • R(D);CHECK,P_PINS(i),XS(d)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • Q(F);XP(g)
      • Threat
        • DUALS(2)
      • Vars
        • R(a);XS(A)::S(E),XP(b)
        • R(a);XS(E)::S(A)
        • P(h);XS(E)::S(A)
        • R(a);::S(A)
        • P(h);::S(A)
      • Refutation
        • K(e);N_SPINS(d),P_SPINS(i),S_FLIGHT
  • Actual
    • Q(F);
    • Threat
      • QAR1(F)
    • Vars
      • K(e);P-FLIGHT::QAR(F)+S(E)
      • K(e);N_SPINS(d),P_SPINS(i),S_FLIGHT::QAR1(F)
      • R(a);SBLOCK,XS(E)::QAR1(F)
      • R(a);N_SPINS(d),P_SPINS(i),SBLOCK::S(A)
      • B(f);SBLOCK::S(E),XP(b)
      • P(h);::QAR1(F),XP(h)
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