MESON Chess Problem Database

Problem Display
PID: 233738 (8/6qb/1Nprp3/R7/1p1k1P2/4RP2/8/K2N2B1 w - - 0 1)

Pankratiev, Aleksandr Nikolaevich

Freie Presse, 1982

8/6qb/1Nprp3/R7/1p1k1P2/4RP2/8/K2N2B1

#2

8 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qf6
      • 2.Rea3#
      • 2.Rb3#
      • 2.Rc3#
    • 1...Qh6
      • 2.Rea3#
      • 2.Rb3#
      • 2.Rc3#
    • 1...Qf8
      • 2.Rea3#
      • 2.Rb3#
      • 2.Rc3#
    • 1...Qh8
      • 2.Rea3#
      • 2.Rb3#
      • 2.Rc3#
    • 1...Qa7
      • 2.Rea3#
      • 2.Rb3#
      • 2.Rc3#
    • 1...Qb7
      • 2.Rea3#
      • 2.Rb3#
      • 2.Rc3#
    • 1...Qc7
      • 2.Rea3#
      • 2.Rb3#
      • 2.Rc3#
    • 1...Qd7
      • 2.Rea3#
      • 2.Rb3#
      • 2.Rc3#
    • 1...Qe7
      • 2.Rea3#
      • 2.Rb3#
      • 2.Rc3#
    • 1...Qf7
      • 2.Rea3#
      • 2.Rb3#
      • 2.Rc3#
    • 1...Bd3
      • 2.Re4#
    • 1...Bg6
      • 2.Rea3#
      • 2.Rb3#
      • 2.Rc3#
  • Tries
    • 1.Sb2?
      • threat
        • 2.Rd3#
      • 1...Bd3
        • 2.Rxd3#
      • 1...Qxg1+!
    • 1.Rxe6+?
      • 1...Qxg1
        • 2.Rxd6#
      • 1...Kd3+!
  • Keys
    • 1.Rc5!
      • threat
        • 2.Rc4#
      • 1...Kxc5+
        • 2.Re5#
      • 1...Qa7+
        • 2.Ra3#
      • 1...Bd3
        • 2.Re4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(g);SBLOCK::B(C)+R(D),DCHECK
  • Tries
    • Try
      • S(B);
      • Threat
        • B(C)+R(D),DCHECK
      • Vars
        • B(g);::B(C)+R(D),DCHECK,XB(g)
      • Refutation
        • Q(f);CHECK,XB(C)
    • Try
      • R(D);CHECK,XP(e)
      • Vars
        • Q(f);P_PINS(B),XB(C)::R(D),XR(d)
      • Refutation
        • K(b);CHECK,P-FLIGHT
  • Actual
    • R(G);
    • Threat
      • R1(G)
    • Vars
      • K(b);CHECK,S_FLIGHT,XR(G)::B(C)+R(D),DCHECK
      • Q(f);CHECK,N_GUARD::B(C)+R(D)
      • B(g);SBLOCK::B(C)+R(D),DCHECK
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