MESON Chess Problem Database

Problem Display
PID: 254972 (1b1n3Q/3R4/p1r5/nNp1p2p/2p5/4kpP1/R4N2/5K2 w - - 0 1)

Vakhlakov, Yuri Nikolaevich

Zadachi i Etyudi, 2006

1b1n3Q/3R4/p1r5/nNp1p2p/2p5/4kpP1/R4N2/5K2

#2

7 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rd6
      • 2.Qxe5#
    • 1...Rh6
      • 2.Qxh6#
    • 1...Rc7
      • 2.Qxe5#
      • 2.Qh6#
    • 1...Rc8
      • 2.Qh6#
    • 1...Bd6
      • 2.Qh6#
    • 1...Ba7
      • 2.Qxe5#
    • 1...c3
      • 2.Rd3#
    • 1...e4
      • 2.Sd1#
      • 2.Qc3#
  • Tries
    • 1.Sa3?
      • threat
        • 2.Sc2#
      • 1...Rd6
        • 2.Qxe5#
      • 1...Bd6!
    • 1.Sc3?
      • threat
        • 2.Sfd1#
        • 2.Scd1#
      • 1...Rd6
        • 2.Qxe5#
      • 1...Bd6!
    • 1.Ra1?
      • threat
        • 2.Re1#
      • 1...Bd6
        • 2.Qh6#
      • 1...Rd6!
    • 1.Ra3+?
      • 1...c3
        • 2.Rxc3#
        • 2.Rd3#
      • 1...Sb3!
    • 1.Rd6?
      • threat
        • 2.Qxe5#
        • 2.Qh6#
      • 1...Rxd6
        • 2.Qxe5#
      • 1...Bxd6
        • 2.Qh6#
      • 1...Se6
        • 2.Qxe5#
      • 1...e4
        • 2.Sd1#
        • 2.Qc3#
        • 2.Qh6#
      • 1...Sf7!
    • 1.Qh7?
      • threat
        • 2.Sd1#
        • 2.Qe4#
      • 1...Rd6
        • 2.Qe4#
      • 1...e4
        • 2.Sd1#
        • 2.Qxe4#
      • 1...Rg6!
  • Keys
    • 1.Rc2!
      • threat
        • 2.Rc3#
      • 1...Rd6
        • 2.Qxe5#
      • 1...Bd6
        • 2.Qh6#
      • 1...c3
        • 2.Rxc3#
        • 2.Rd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 4
  • Sets
    • R(i);S_CUTB(j)::QAR2(G),XP(f)
    • R(i);N_GUARD::QAB(G),XR(i)
    • R(i);N_GUARD::QAB(G)
    • B(j);S_CUTR(i)::QAB(G)
    • B(j);N_GUARD::QAR2(G),XP(f)
    • P(c);N_GUARD::R1(F)
  • Tries
    • Try
      • S(E);
      • Threat
        • S(E)
      • Vars
        • R(i);S_CUTB(j)::QAR2(G),XP(f)
      • Refutation
        • B(j);
    • Try
      • S(E);
      • Threat
        • DUALS(2)
      • Vars
        • R(i);S_CUTB(j)::QAR2(G),XP(f)
      • Refutation
        • B(j);
    • Try
      • R(B);
      • Threat
        • R(B)
      • Vars
        • B(j);S_CUTR(i)::QAB(G)
      • Refutation
        • R(i);
    • Try
      • R(B);CHECK
      • Refutation
        • S(d);P_SPINS(d)
    • Try
      • R(F);
      • Threat
        • DUALS(2)
      • Vars
        • R(i);XR(F)::QAR2(G),XP(f)
        • B(j);XR(F)::QAB(G)
        • S(k);::QAR2(G),XP(f)
      • Refutation
        • S(k);
    • Try
      • Q(G);
      • Threat
        • DUALS(2)
      • Vars
        • R(i);::QAR1(G)
      • Refutation
        • R(i);
  • Actual
    • R(B);
    • Threat
      • R(B)
    • Vars
      • R(i);S_CUTB(j)::QAR2(G),XP(f)
      • B(j);S_CUTR(i)::QAB(G)
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