MESON Chess Problem Database

Problem Display
PID: 251200 (1b1rq3/3Q4/NR1nn3/3k4/1pr5/1R3P2/B1N1bK1B/8 w - - 0 1)

Gorbatenko, Yuri Grigorevich

6th HM., Uralski Problemist-20 JT, 2013

1b1rq3/3Q4/NR1nn3/3k4/1pr5/1R3P2/B1N1bK1B/8

#2

9 + 9

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc2
      • 2.Rd3#
    • 1...Rd4
      • 2.Se3#
    • 1...Re4
      • 2.Rd3#
    • 1...Rg4
      • 2.Rd3#
    • 1...Rh4
      • 2.Rd3#
    • 1...Rc5
      • 2.Rd3#
    • 1...Rc6
      • 2.Rd3#
    • 1...Rc7
      • 2.Rd3#
    • 1...Rcc8
      • 2.Rd3#
    • 1...Sc7
      • 2.Rxd6#
  • Tries
    • 1.Scxb4+?
      • 1...Rxb4
        • 2.Rd3#
      • 1...Kd4!
    • 1.Rd3+?
      • 1...Sd4
        • 2.Scxb4#
        • 2.Rxd4#
        • 2.Rb5#
      • 1...Bxd3!
    • 1.Rb5+?
      • 1...Rc5
        • 2.Rd3#
      • 1...Sc5!
    • 1.Qc6+?
      • 1...Rxc6
        • 2.Rd3#
      • 1...Qxc6!
  • Keys
    • 1.Re3!
      • threat
        • 2.Re5#
      • 1...Qh5
        • 2.Qc6#
        • 2.Qxe6#
      • 1...Qh8
        • 2.Qc6#
        • 2.Qxe6#
      • 1...Sd4
        • 2.Scxb4#
      • 1...Sf4
        • 2.Rb5#
      • 1...Sc5
        • 2.Saxb4#
      • 1...Sg5
        • 2.Rb5#
      • 1...Sc7
        • 2.Rxd6#
      • 1...Sg7
        • 2.Rb5#
      • 1...Sf8
        • 2.Rb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 9
  • Sets
    • R(c);XS(B)::B(A)+R(E),DCHECK
    • R(c);SBLOCK::S(B)
    • R(c);::B(A)+R(E),DCHECK
    • S(f);S_CUTB(g)::R1(H),XS(e)
  • Tries
    • Try
      • S(B);CHECK,XP(b)
      • Vars
        • R(c);XS(B)::B(A)+R(E),DCHECK
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • R(E);CHECK,P_PINR(c)
      • Refutation
        • B(a);XR(E)
    • Try
      • R(H);CHECK
      • Vars
        • R(c);P_SPINR(c)::B(A)+R(E),DCHECK
      • Refutation
        • S(f);N_SPINS(e),P_SPINS(f)
    • Try
      • Q(I);CHECK,N_PINS(e)
      • Vars
        • R(c);XQ(I)::B(A)+R(E),DCHECK
      • Refutation
        • Q(i);XQ(I)
  • Actual
    • R(E);P_PINR(c)
    • Threat
      • R1(E)
    • Vars
      • S(f);SBLOCK::S(B),XP(b)
      • S(f);N_GUARD::R(H)
      • S(f);SBLOCK::S(G),XP(b)
      • S(f);S_CUTB(g)::R1(H),XS(e)
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