MESON Chess Problem Database

Problem Display
PID: 249472 (B2rR3/1rpPn1N1/N1p1R3/3kB3/P2pp3/4p3/2P3Kb/5Q2 w - - 0 1)

Tuseyev, Aleksandr

Uralski Problemist, 2000

B2rR3/1rpPn1N1/N1p1R3/3kB3/P2pp3/4p3/2P3Kb/5Q2

#2

11 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rb5
      • 2.Qxb5#
    • 1...Ra7
      • 2.Qb5#
    • 1...c5
      • 2.Sxc7#
  • Tries
    • 1.Sxc7+?
      • 1...Rxc7
        • 2.Qb5#
      • 1...Kc5!
    • 1.Rd6+?
      • 1...Kxe5
        • 2.Qf6#
      • 1...cxd6!
    • 1.Qf7?
      • threat
        • 2.R6xe7#
      • 1...Kc4
        • 2.Rxc6#
      • 1...Bxe5
        • 2.Rf6#
        • 2.Rg6#
        • 2.Rh6#
      • 1...Sf5
        • 2.Rd6#
        • 2.Rf6#
        • 2.Rg6#
        • 2.Rh6#
        • 2.R6e7#
      • 1...Sg6
        • 2.Rd6#
        • 2.Rf6#
        • 2.Rxg6#
        • 2.R6e7#
      • 1...Sc8
        • 2.Rd6#
        • 2.Rf6#
        • 2.Rg6#
        • 2.Rh6#
        • 2.R6e7#
      • 1...Sg8
        • 2.Rd6#
        • 2.Rf6#
        • 2.Rg6#
        • 2.Rh6#
        • 2.R6e7#
      • 1...c5!
  • Keys
    • 1.Rxc6!
      • threat
        • 2.Rc5#
      • 1...Kxe5
        • 2.Qf5#
      • 1...Kxc6
        • 2.Qb5#
      • 1...Bxe5
        • 2.Qc4#
      • 1...Sxc6
        • 2.Qf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • R(g);N_GUARD,P_SPINP(f)::QAR2(A),XR(g)
    • R(g);N_GUARD,P_SPINP(f)::QAR2(A)
    • P(f);P_SPINR(g),SBLOCK::S(F),XP(h)
  • Tries
    • Try
      • S(F);CHECK,XP(h)
      • Vars
        • R(g);P_SPINP(f),XS(F)::QAR2(A)
      • Refutation
        • K(e);P-FLIGHT
    • Try
      • R(G);CHECK
      • Vars
        • K(e);P-FLIGHT,P_SPINS(i),XB(E)::QAB1(A)
      • Refutation
        • P(h);XR(G)
    • Try
      • Q(A);
      • Threat
        • QAB(A)+R(G),XS(i)
      • Vars
        • K(e);S_FLIGHT::QAB(A)+R(G),DCHECK,XP(f)
      • Refutation
        • P(f);P_SPINR(g)
  • Actual
    • R(G);XP(f)
    • Threat
      • R1(G)
    • Vars
      • K(e);OGATEB,P-FLIGHT,P_SPINS(i),XB(E)::QAR1(A)
      • K(e);P_SPINR(g),S_FLIGHT,XR(G)::QAB1(A)
      • B(a);SBLOCK,XB(E)::QAB1(A)
      • S(i);SBLOCK,XR(G)::QAB(A)
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