MESON Chess Problem Database

Problem Display
PID: 234473 (Bq3b2/3pB1pK/4k1NN/2r1P2p/8/3R1p2/8/4Q3 w - - 0 1)

Makaronets, Leonid

Revista Romana de Sah, 1979

Bq3b2/3pB1pK/4k1NN/2r1P2p/8/3R1p2/8/4Q3

#2

8 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe5
      • 2.Rd6#
    • 1...Qd6
      • 2.Rxd6#
    • 1...Qa7
      • 2.Rd6#
    • 1...Qb1
      • 2.Rd6#
    • 1...Qb2
      • 2.Rd6#
    • 1...Qb3
      • 2.Rd6#
    • 1...Qb4
      • 2.Rd6#
    • 1...Qb5
      • 2.Rd6#
    • 1...Qb7
      • 2.Rd6#
    • 1...Qxa8
      • 2.Rd6#
    • 1...Qc8
      • 2.Rd6#
    • 1...Qd8
      • 2.Rd6#
    • 1...Qe8
      • 2.Rd6#
    • 1...Rc1
      • 2.Bd5#
    • 1...Rc2
      • 2.Bd5#
    • 1...Rc3
      • 2.Bd5#
    • 1...Rc4
      • 2.Bd5#
    • 1...Rd5
      • 2.Bxd5#
    • 1...Rxe5
      • 2.Bd5#
    • 1...Rc7
      • 2.Bd5#
      • 2.Rd6#
    • 1...Rc8
      • 2.Bd5#
    • 1...Bxe7
      • 2.Sf4#
  • Tries
    • 1.Qe4?
      • threat
        • 2.Qf5#
      • 1...Qxe5
        • 2.Rd6#
      • 1...Rxe5
        • 2.Bd5#
      • 1...gxh6!
  • Keys
    • 1.Qh4!
      • threat
        • 2.Qh3#
      • 1...Qxe5
        • 2.Sxf8#
      • 1...Rxe5
        • 2.Sf4#
      • 1...gxh6
        • 2.Qf6#
      • 1...Qb4
        • 2.Rd6#
      • 1...Rc4
        • 2.Bd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 17
  • Sets
    • Q(g);N_GUARD,P_SPINQ(g),XP(C)::R1(B)
    • Q(g);N_GUARD::R1(B),XQ(g)
    • Q(g);N_GUARD::R1(B)
    • Q(g);N_GUARD,XB(H)::R1(B)
    • R(b);N_GUARD::B(H)
    • R(b);N_GUARD::B(H),XR(b)
    • R(b);N_GUARD,P_SPINR(b),XP(C)::B(H)
    • B(h);SBLOCK,XB(F)::S(D)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • Q(g);N_GUARD,P_SPINQ(g),XP(C)::R1(B)
        • R(b);N_GUARD,P_SPINR(b),XP(C)::B(H)
      • Refutation
        • P(f);XS(E)
  • Actual
    • Q(A);
    • Threat
      • QAB(A)
    • Vars
      • Q(g);N_GUARD,SBLOCK,XP(C)::S(D),XB(h)
      • R(b);SBLOCK,XP(C)::S(D)
      • P(f);N_GUARD,XS(E)::QAR1(A)
      • Q(g);N_GUARD::R1(B)
      • R(b);N_GUARD::B(H)
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