MESON Chess Problem Database

Problem Display
PID: 54769 (3nN1K1/4p3/4R3/2PppkP1/3b2p1/2PN2Q1/1PR1p3/1BB5 w - - 0 1)

Kopaev, Viacheslav Georgievich

Springaren, 1994

3nN1K1/4p3/4R3/2PppkP1/3b2p1/2PN2Q1/1PR1p3/1BB5

#2

12 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe6
      • 2.Qxg4#
    • 1...Bg1
      • 2.Qxe5#
    • 1...Bf2
      • 2.Qxe5#
    • 1...Be3
      • 2.Qxe5#
    • 1...Bxc5
      • 2.Qxe5#
  • Tries
    • 1.Sf2?
      • threat
        • 2.Sg7#
        • 2.Qxg4#
      • 1...Kxe6
        • 2.Qxg4#
      • 1...Bxf2
        • 2.Qxe5#
      • 1...Be3
        • 2.Qxe5#
        • 2.Qxg4#
      • 1...e4
        • 2.Qxg4#
      • 1...Sxe6!
    • 1.Sd6+?
      • 1...Kxe6
        • 2.Qxg4#
      • 1...exd6!
    • 1.Rxe2?
      • threat
        • 2.Sg7#
      • 1...Kxe6
        • 2.Qxg4#
      • 1...Sxe6
        • 2.Sxe5#
      • 1...Be3
        • 2.Qxe5#
      • 1...e4!
    • 1.Rxe5+?
      • 1...Kg6
        • 2.Sf4#
      • 1...Bxe5!
    • 1.Qf4+?
      • 1...Kxe6
        • 2.Qxg4#
      • 1...exf4!
    • 1.Qf3+?
      • 1...Kxe6
        • 2.Qxg4#
      • 1...gxf3!
  • Keys
    • 1.Sxe5!
      • threat
        • 2.Qxg4#
      • 1...Ke4
        • 2.Rd2#
        • 2.Rxe2#
        • 2.Qf4#
        • 2.Qd3#
        • 2.Qxg4#
      • 1...Kxe6
        • 2.Sg7#
      • 1...Bxe5
        • 2.Qxe5#
      • 1...Sxe6
        • 2.Rxe2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • K(f);S_FLIGHT,XR(J)::QAB(G),XP(c)
    • B(b);N_GUARD::QAR1(G),XP(e)
    • B(b);N_GUARD,XP(H)::QAR1(G),XP(e)
  • Tries
    • Try
      • S(F);
      • Threat
        • DUALS(2)
      • Vars
        • K(f);S_FLIGHT,XR(J)::QAB(G),XP(c)
        • B(b);N_GUARD,XS(F)::QAR1(G),XP(e)
        • P(e);::QAB1(G),XP(c)
      • Refutation
        • S(h);XR(J)
    • Try
      • S(K);CHECK
      • Vars
        • K(f);S_FLIGHT,XR(J)::QAB(G),XP(c)
      • Refutation
        • P(g);XS(K)
    • Try
      • R(D);XP(a)
      • Threat
        • S(K)
      • Vars
        • K(f);P_SPINP(e),S_FLIGHT,XR(J)::QAB(G),XP(c)
        • S(h);SBLOCK,XR(J)::B(A)+S(F),XP(e)
        • B(b);N_GUARD::QAR1(G),XP(e)
      • Refutation
        • P(e);
    • Try
      • R(J);CHECK,XP(e)
      • Vars
        • K(f);S_FLIGHT::S(F)
      • Refutation
        • B(b);XR(J)
    • Try
      • Q(G);CHECK
      • Vars
        • K(f);S_FLIGHT,XR(J)::QAB(G),XP(c)
      • Refutation
        • P(e);XQ(G)
    • Try
      • Q(G);CHECK
      • Vars
        • K(f);S_FLIGHT,XR(J)::QAB(G),XP(c)
      • Refutation
        • P(c);XQ(G)
  • Actual
    • S(F);XP(e)
    • Threat
      • QAB1(G),XP(c)
    • Vars
      • K(f);S_FLIGHT,XR(J)::S(K)
      • B(b);OGATE,XS(F)::QAR1(G),XB(b)
      • S(h);SBLOCK,XR(J)::B(A)+R(D),XP(a)
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