MESON Chess Problem Database

Problem Display
PID: 246709 (8/2Q1p3/B3P3/1rNp2p1/2Nk2K1/5pR1/1P6/2R5 w - - 0 1)

Shanshin, Valery Yurevich

Moscow Ty., 2013

8/2Q1p3/B3P3/1rNp2p1/2Nk2K1/5pR1/1P6/2R5

#2

9 + 6

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rb4
      • 2.Rd1#
    • 1...Ra5
      • 2.Rd1#
    • 1...Rb6
      • 2.Rd1#
    • 1...Rb7
      • 2.Rd1#
    • 1...Rb8
      • 2.Rd1#
    • 1...f2
      • 2.Rd3#
  • Tries
    • 1.Kxf3?
      • threat
        • 2.Rg4#
      • 1...g4+
        • 2.Rxg4#
      • 1...Rxc5
        • 2.Rd1#
      • 1...dxc4
        • 2.Rd1#
      • 1...Rb3+!
    • 1.Rxf3?
      • threat
        • 2.Rd3#
      • 1...Rxc5
        • 2.Qe5#
      • 1...dxc4
        • 2.Rd1#
      • 1...Rb3!
  • Keys
    • 1.Kf5!
      • threat
        • 2.Rg4#
      • 1...Rxc5
        • 2.Rd1#
      • 1...dxc4
        • 2.Qe5#
      • 1...g4
        • 2.Rxg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • R(c);::R(A)
    • P(a);OGATE::R1(C)
  • Tries
    • Try
      • K(E);S_FLIGHT,XP(a)
      • Threat
        • R(C)
      • Vars
        • P(e);CHECK::R(C),XP(e)
        • R(c);XS(F)::R(A)
        • P(d);SBLOCK,XS(D)::R(A)
      • Refutation
        • R(c);CHECK
    • Try
      • R(C);XP(a)
      • Threat
        • R1(C)
      • Vars
        • R(c);SBLOCK,XS(F)::QAB1(I)
        • P(d);SBLOCK,XS(D)::R(A)
      • Refutation
        • R(c);
  • Actual
    • K(E);S_FLIGHT
    • Threat
      • R(C)
    • Vars
      • R(c);XS(F)::R(A)
      • P(d);P_PINS(F),XS(D)::QAB1(I)
      • P(e);::R(C),XP(e)
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