MESON Chess Problem Database

Problem Display
PID: 163409 (8/2R5/4k1K1/2Ppp3/2p3nb/r1R2N2/3r2N1/Q7 w - - 0 1)

Valters, N

Sachmatija, 2004

8/2R5/4k1K1/2Ppp3/2p3nb/r1R2N2/3r2N1/Q7

#2

7 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc3
      • 2.Qa6#
    • 1...Ra6
      • 2.Qxa6#
    • 1...Be1
      • 2.Sg5#
    • 1...Bf2
      • 2.Sg5#
    • 1...Bg3
      • 2.Sg5#
    • 1...Bg5
      • 2.Sxg5#
    • 1...e4
      • 2.Sf4#
  • Tries
    • 1.Qb1?
      • threat
        • 2.Qf5#
        • 2.Qb6#
      • 1...Rb2
        • 2.Qf5#
      • 1...Rc2
        • 2.Qb6#
      • 1...Rd3
        • 2.Qb6#
      • 1...Rb3
        • 2.Qf5#
      • 1...Ra6
        • 2.Qf5#
      • 1...Be7
        • 2.Qf5#
      • 1...Se3
        • 2.Qb6#
      • 1...Sh6
        • 2.Qb6#
      • 1...e4
        • 2.Sf4#
        • 2.Qb6#
      • 1...d4!
  • Keys
    • 1.Re3!
      • threat
        • 2.Sf4#
      • 1...Rxg2
        • 2.Sd4#
      • 1...Rxe3
        • 2.Qa6#
      • 1...Sxe3
        • 2.Qxe5#
      • 1...Rd4
        • 2.Sxd4#
      • 1...Bg3
        • 2.Sg5#
      • 1...Bg5
        • 2.Sxg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • R(b);OGATE,XR(C)::QAR(A)
    • R(b);OGATE::QAR(A),XR(b)
    • B(e);N_GUARD::S(D)
    • B(e);N_GUARD::S(D),XB(e)
    • P(g);N_GUARD::S(B)
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • R(a);::QAB1(A)
        • R(a);::QAR(A)
        • R(b);::QAB1(A)
        • B(e);::QAB1(A)
        • S(d);::QAR(A)
      • Refutation
        • P(f);
  • Actual
    • R(C);P_PINP(g)
    • Threat
      • S(B)
    • Vars
      • R(a);N_GUARD,XS(B)::S(D)
      • R(b);N_SPINP(g),OGATE,XR(C)::QAR(A)
      • S(d);N_GUARD,N_SPINP(g),XR(C)::QAR1(A),XP(g)
      • R(a);N_GUARD::S(D),XR(a)
      • B(e);N_GUARD::S(D)
      • B(e);N_GUARD::S(D),XB(e)
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