MESON Chess Problem Database

Problem Display
PID: 61175 (5Q2/8/4p3/2ppp3/K1N1k1P1/6P1/1P1rB2n/4R3 w - - 0 1)

Vinokurov, Vadim Konstantinovich

Comm., Uralski Problemist, 2001

5Q2/8/4p3/2ppp3/K1N1k1P1/6P1/1P1rB2n/4R3

#2

8 + 7

4393 Uralski Problemist 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Bf1#
    • 1...d4
      • 2.Qa8#
  • Tries
    • 1.Sxd2+?
      • 1...Kd4
        • 2.Qf2#
      • 1...Ke3!
    • 1.Sd6+?
      • 1...Kd4
        • 2.Qf2#
      • 1...Ke3!
    • 1.Qf3+?
      • 1...Kd4
        • 2.Qe3#
      • 1...Sxf3!
    • 1.Qf5+?
      • 1...Kd4
        • 2.Qxe5#
      • 1...exf5!
  • Keys
    • 1.Sxe5!
      • threat
        • 2.Qf4#
      • 1...Rd4+
        • 2.Bc4#
      • 1...Ke3
        • 2.Qf4#
      • 1...Kd4
        • 2.Qf4#
      • 1...Kxe5
        • 2.Qf4#
      • 1...d4
        • 2.Bf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(a);N_GUARD,P_PINS(F),SBLOCK::R(A)+B(C)
    • P(e);OGATEB,SBLOCK::QAB(H)
  • Tries
    • Try
      • S(F);CHECK,XR(a)
      • Vars
        • K(c);P-FLIGHT::QAB(H)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • S(F);CHECK
      • Vars
        • K(c);P-FLIGHT::QAB(H)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(H);CHECK
      • Vars
        • K(c);P-FLIGHT::QAB1(H)
      • Refutation
        • S(b);XQ(H)
    • Try
      • Q(H);CHECK
      • Vars
        • K(c);P-FLIGHT::QAB1(H),XP(f)
      • Refutation
        • P(g);XQ(H)
  • Actual
    • S(F);XP(f)
    • Threat
      • QAR1(H)
    • Vars
      • R(a);CHECK,N_GUARD,SBLOCK::R(A)+B(C)
      • K(c);P-FLIGHT::QAB1(H)
      • K(c);P-FLIGHT::QAR2(H)
      • K(c);P-FLIGHT,XS(F)::QAB1(H)
      • P(e);SBLOCK::R(A)+B(C),DCHECK
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