MESON Chess Problem Database

Problem Display
PID: 246360 (8/6pK/B5R1/1p3RP1/3p4/PPk5/2b2P2/N1Q1n3 w - - 0 1)

Erokhin, Vladimir Alekseevich

Shakhmatnaya Poeziya, 1999

8/6pK/B5R1/1p3RP1/3p4/PPk5/2b2P2/N1Q1n3

#2

10 + 6

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sg2
      • 2.Qxc2#
    • 1...Sd3
      • 2.Qxc2#
    • 1...Sf3
      • 2.Qxc2#
    • 1...b4
      • 2.Rc5#
      • 2.Rc6#
  • Tries
    • 1.Bxb5?
      • threat
        • 2.Rc5#
        • 2.Rc6#
      • 1...Sd3
        • 2.Qxc2#
      • 1...d3!
    • 1.Rf3+?
      • 1...Sd3
        • 2.Rc6#
        • 2.Qxc2#
      • 1...Sxf3
        • 2.Qxc2#
      • 1...d3!
    • 1.Rd6?
      • 1...Kd3
        • 2.Qe3#
      • 1...d3
        • 2.Rc5#
      • 1...Sg2
        • 2.Qxc2#
      • 1...Sd3
        • 2.Qxc2#
      • 1...Sf3
        • 2.Qxc2#
      • 1...b4
        • 2.Rc6#
      • 1...g6!
    • 1.Qxe1+?
      • 1...Kd3
        • 2.Bxb5#
        • 2.Rf3#
      • 1...Kb2!
  • Keys
    • 1.Rd5!
      • 1...Kd3
        • 2.Qe3#
      • 1...d3
        • 2.Rc6#
      • 1...Sg2
        • 2.Qxc2#
      • 1...Sd3
        • 2.Qxc2#
      • 1...Sf3
        • 2.Qxc2#
      • 1...b4
        • 2.Rc5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::QAR1(B),XB(b)
  • Tries
    • Try
      • B(H);XP(e)
      • Threat
        • DUALS(2)
      • Vars
        • S(a);N_GUARD::QAR1(B),XB(b)
      • Refutation
        • P(d);
    • Try
      • R(F);CHECK,P_SPINR(I)
      • Vars
        • S(a);XR(F)::QAR1(B),XB(b)
      • Refutation
        • P(d);N_PINR(I),P_SPINP(d)
    • Try
      • R(I);P_SPINR(F)
      • Vars
        • K(c);N_PINR(F),N_SPINB(b),P-FLIGHT,P_SPINP(d)::QAR1(B)
        • P(d);N_PINR(F)::R(F)
        • S(a);N_GUARD::QAR1(B),XB(b)
        • S(a);N_GUARD,N_PINR(F)::QAR1(B),XB(b)
        • P(e);::R(I)
      • Refutation
        • P(f);N_PINR(F)
    • Try
      • Q(B);CHECK,N_PINB(b),XS(a)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • R(F);P_SPINR(I)
    • Vars
      • K(c);N_PINR(I),N_SPINB(b),P-FLIGHT,P_SPINP(d)::QAR1(B)
      • P(d);N_PINR(I)::R(I)
      • S(a);N_GUARD::QAR1(B),XB(b)
      • S(a);N_GUARD,N_PINR(I)::QAR1(B),XB(b)
      • P(e);::R(F)
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