MESON Chess Problem Database

Problem Display
PID: 186621 (8/1N2b3/4r3/4P1pn/1R1pk1P1/R4N2/B1P2K2/q1B5 w - - 0 1)

Mere, S

Chess, 1959

8/1N2b3/4r3/4P1pn/1R1pk1P1/R4N2/B1P2K2/q1B5

#2

10 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qb1
      • 2.Rxd4#
    • 1...Qxc1
      • 2.Rxd4#
    • 1...Qxa2
      • 2.Rxd4#
    • 1...Rd6
      • 2.Sc5#
    • 1...Bc5
      • 2.Sxc5#
    • 1...Bf6
      • 2.Sc5#
    • 1...Bd8
      • 2.Sc5#
    • 1...Sf4
      • 2.Re3#
  • Keys
    • 1.Ra5!
      • threat
        • 2.Bd5#
      • 1...Qxc1
        • 2.Rxd4#
      • 1...Qxa2
        • 2.Rxd4#
      • 1...Rxe5
        • 2.Rxe5#
      • 1...Rd6
        • 2.Sc5#
      • 1...Bc5
        • 2.Sxc5#
      • 1...Sf4
        • 2.Sd2#
      • 1...Sf6
        • 2.Sxg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • Q(a);N_GUARD::R1(G),XP(b)
    • Q(a);N_GUARD,XB(A)::R1(G),XP(b)
    • Q(a);N_GUARD,P_PINP(C),XB(B)::R1(G),XP(b)
    • R(f);S_CUTB(g)::S(J)
    • B(g);N_GUARD::S(J),XB(g)
    • B(g);N_GUARD::S(J)
    • S(e);SBLOCK::R1(E)
  • Actual
    • R(E);
    • Threat
      • B(B)
    • Vars
      • Q(a);N_GUARD,XB(A)::R1(G),XP(b)
      • Q(a);N_GUARD,P_PINP(C),XB(B)::R1(G),XP(b)
      • R(f);OGATE,XP(I)::R1(E),XR(f)
      • R(f);S_CUTB(g)::S(J)
      • B(g);N_GUARD::S(J),XB(g)
      • S(e);SBLOCK::S(F)
      • S(e);S_CUTB(g)::S(F),XP(d)
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