MESON Chess Problem Database

Problem Display
PID: 252652 (8/8/2Q5/r7/3k1b2/1R6/2P4B/1B1K4 w - - 0 1)

Shmatov, Vladimir Afanasievich

Zadachi i Etyudi, 2005

8/8/2Q5/r7/3k1b2/1R6/2P4B/1B1K4

#2

6 + 3

5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Re5
      • 2.Rd3#
    • 1...Bc1
      • 2.Rd3#
    • 1...Bd2
      • 2.Rd3#
    • 1...Be3
      • 2.Rd3#
      • 2.Rb4#
      • 2.c3#
    • 1...Be5
      • 2.Bg1#
      • 2.Rd3#
    • 1...Bg5
      • 2.Rd3#
    • 1...Bd6
      • 2.Rd3#
    • 1...Bh6
      • 2.Rd3#
    • 1...Bc7
      • 2.Rd3#
    • 1...Bb8
      • 2.Rd3#
  • Tries
    • 1.Bxf4?
      • threat
        • 2.Rd3#
        • 2.Rb4#
        • 2.c3#
      • 1...Rd5
        • 2.Rb4#
        • 2.c3#
      • 1...Ra3
        • 2.Rb4#
        • 2.c3#
      • 1...Ra4
        • 2.Rd3#
        • 2.c3#
      • 1...Rb5
        • 2.Rd3#
        • 2.c3#
      • 1...Rc5!
    • 1.Rb4+?
      • 1...Ke3
        • 2.Bg1#
      • 1...Ke5!
    • 1.c3+?
      • 1...Ke3
        • 2.Bg1#
      • 1...Ke5!
  • Keys
    • 1.Re3!
      • threat
        • 2.Re4#
      • 1...Kxe3
        • 2.Bg1#
      • 1...Bxe3
        • 2.c3#
      • 1...Rc5
        • 2.Qe4#
      • 1...Rd5
        • 2.Qc3#
      • 1...Re5
        • 2.Rd3#

Anticipated by 4535(1876)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 7
  • Sets
    • R(c);SBLOCK::R1(E)
    • B(b);::R1(E)
  • Tries
    • Try
      • B(D);XB(b)
      • Threat
        • DUALS(3)
      • Refutation
        • R(c);
    • Try
      • R(E);CHECK
      • Vars
        • K(a);N_GUARD,S_FLIGHT::B(D)
      • Refutation
        • K(a);P_SPINB(b),S_FLIGHT
    • Try
      • P(C);CHECK
      • Vars
        • K(a);N_GUARD,S_FLIGHT::B(D)
      • Refutation
        • K(a);P_SPINB(b),S_FLIGHT
  • Actual
    • R(E);
    • Threat
      • R1(E)
    • Vars
      • K(a);OGATEB,S_FLIGHT,XR(E)::B(D)
      • B(b);SBLOCK,XR(E)::P(C)
      • R(c);SBLOCK::QAR1(F)
      • R(c);SBLOCK::QAB1(F)
      • R(c);SBLOCK::R1(E)
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