MESON Chess Problem Database

Problem Display
PID: 245236 (6Q1/4p3/2PpP3/PPk5/8/K4N2/N3R3/5B2 w - - 0 1)

Atayants, Grigory Sergeevich

64 Shakhmatnoe obozrenie, 1972

6Q1/4p3/2PpP3/PPk5/8/K4N2/N3R3/5B2

#2

10 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Re5#
  • Tries
    • 1.Sb4?
      • threat
        • 2.Rc2#
      • 1...Kc4
        • 2.Rc2#
      • 1...Kxb5
        • 2.Re5#
      • 1...d5!
    • 1.Re1?
      • 1...Kd5
        • 2.Qg5#
      • 1...d5!
    • 1.Re3?
      • 1...Kd5
        • 2.Qg5#
      • 1...d5!
    • 1.Qg1+?
      • 1...Kc4
        • 2.Rd2#
        • 2.Re5#
      • 1...Kd5
        • 2.Qd4#
      • 1...Kxb5!
    • 1.Qg4?
      • 1...Kd5
        • 2.Qd4#
      • 1...d5
        • 2.Qb4#
      • 1...Kxb5!
    • 1.Qg5+?
      • 1...Kc4
        • 2.Re1#
        • 2.Rb2#
        • 2.Rc2#
        • 2.Rd2#
        • 2.Rf2#
        • 2.Rg2#
        • 2.Rh2#
        • 2.Re3#
        • 2.Re4#
        • 2.Re5#
      • 1...d5!
    • 1.Qb8?
      • 1...Kc4
        • 2.Re5#
      • 1...d5
        • 2.Rc2#
      • 1...Kd5!
  • Keys
    • 1.Qd8!
      • 1...Kc4
        • 2.Re5#
      • 1...Kxb5
        • 2.Rc2#
      • 1...Kd5
        • 2.Re5#
      • 1...d5
        • 2.Rc2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::B(A)+R(C)
  • Tries
    • Try
      • S(B);
      • Threat
        • R(C)
      • Vars
        • K(a);P-FLIGHT::B(A)+R(C),DCHECK
        • K(a);P-FLIGHT,XP(G)::B(A)+R(C),DCHECK
      • Refutation
        • P(b);
    • Try
      • R(C);
      • Vars
        • K(a);P-FLIGHT::QAR(J)
      • Refutation
        • P(b);
    • Try
      • R(C);
      • Vars
        • K(a);P-FLIGHT::QAR(J)
      • Refutation
        • P(b);
    • Try
      • Q(J);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(J)
      • Refutation
        • K(a);P-FLIGHT,XP(G)
    • Try
      • Q(J);
      • Vars
        • K(a);P-FLIGHT::QAR1(J)
        • P(b);SBLOCK::QAB1(J)
      • Refutation
        • K(a);P-FLIGHT,XP(G)
    • Try
      • Q(J);CHECK
      • Refutation
        • P(b);P_SPINP(b)
    • Try
      • Q(J);
      • Vars
        • K(a);P-FLIGHT::B(A)+R(C)
        • P(b);SBLOCK::R(C)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(J);
    • Vars
      • K(a);P-FLIGHT::B(A)+R(C)
      • K(a);P-FLIGHT,XP(G)::B(A)+R(C)
      • K(a);P-FLIGHT,P_SPINP(b)::R1(C)
      • P(b);::R(C)
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