MESON Chess Problem Database

Problem Display
PID: 214843 (8/4pr1B/6P1/p2R1n2/2P1k3/r7/NpP1P1PB/1Kb1QN2 w - - 0 1)

Kopaev, Viacheslav Georgievich

Kuzovkov, Aleksandr S

Zadachi i Etyudi, 1998

8/4pr1B/6P1/p2R1n2/2P1k3/r7/NpP1P1PB/1Kb1QN2

#2

12 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rc3
      • 2.Sxc3#
    • 1...Rd3
      • 2.cxd3#
      • 2.exd3#
    • 1...Rf3
      • 2.exf3#
      • 2.gxf3#
    • 1...Ra4
      • 2.Sc3#
    • 1...Sd4
      • 2.Re5#
  • Tries
    • 1.Qf2?
      • threat
        • 2.Re5#
      • 1...Re3
        • 2.Qf4#
      • 1...Be3
        • 2.Qf3#
      • 1...Bf4
        • 2.Qxf4#
      • 1...Se3
        • 2.Sg3#
      • 1...Sg3
        • 2.Qd4#
      • 1...e5
        • 2.Rxe5#
      • 1...Rg3!
    • 1.Qc3?
      • threat
        • 2.Re5#
        • 2.Qe5#
      • 1...Rxc3
        • 2.Sxc3#
      • 1...Sg3
        • 2.Qd4#
        • 2.Qe5#
      • 1...Sd4
        • 2.Re5#
        • 2.Qxd4#
      • 1...e5
        • 2.Rxe5#
        • 2.Qxe5#
      • 1...Bf4!
    • 1.Qh4+?
      • 1...Bf4
        • 2.Qxf4#
      • 1...Sxh4!
  • Keys
    • 1.e3!
      • threat
        • 2.Re5#
      • 1...Rxe3
        • 2.Sc3#
      • 1...Bxe3
        • 2.Sd2#
      • 1...Sxe3
        • 2.gxf7#
      • 1...Sg3
        • 2.Sxg3#
      • 1...e5
        • 2.Rxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 3
  • Sets
    • R(c);N_GUARD::S(D),XR(c)
    • R(c);N_GUARD::S(D)
    • S(f);SBLOCK::R1(J)
  • Tries
    • Try
      • Q(B);
      • Threat
        • R1(J)
      • Vars
        • R(c);S_CUTB(a)::QAR1(B)
        • B(a);S_CUTR(c)::QAB1(B)
        • B(a);N_GUARD::QAR1(B),XB(a)
        • S(f);N_GUARD,S_CUTR(c)::S(C)
        • S(f);N_GUARD::QAR1(B)
        • P(g);::R1(J),XP(g)
      • Refutation
        • R(c);
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • R(c);XQ(B)::S(D),XR(c)
      • Refutation
        • B(a);
    • Try
      • Q(B);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::QAR1(B),XB(a)
      • Refutation
        • S(f);XQ(B)
  • Actual
    • P(F);
    • Threat
      • R1(J)
    • Vars
      • R(c);N_GUARD,P_SPINR(c),XP(F)::S(D)
      • B(a);N_GUARD,P_SPINB(a),XP(F)::S(C)
      • S(f);P_SPINS(f),XP(F)::B(L)+P(K),XR(h)
      • S(f);N_GUARD::S(C),XS(f)
      • P(g);::R1(J),XP(g)
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