MESON Chess Problem Database

Problem Display
PID: 63893 (B7/B1b2N2/6K1/p2n3N/Rr2k1pp/2Pp4/4nPP1/4Q3 w - - 0 1)

Mosiashvili, Givi

Comm., StrateGems, 2003

B7/B1b2N2/6K1/p2n3N/Rr2k1pp/2Pp4/4nPP1/4Q3

#2

10 + 9

145 StrateGems 2005

SOLUTION

  • SOUND
  • Sets
    • 1...Rc4
      • 2.Rxc4#
    • 1...Rd4
      • 2.Rxd4#
    • 1...Bf4
      • 2.Sf6#
    • 1...Be5
      • 2.Sg5#
    • 1...d2
      • 2.Qb1#
      • 2.Qxe2#
    • 1...g3
      • 2.f3#
  • Tries
    • 1.Be3?
      • threat
        • 2.Sf6#
      • 1...Sf4+
        • 2.Bxf4#
      • 1...d2
        • 2.Qb1#
      • 1...Be5
        • 2.Sg5#
      • 1...Bd8!
    • 1.Qd2?
      • threat
        • 2.Sf6#
        • 2.Qe3#
      • 1...Bf4
        • 2.Sf6#
      • 1...Be5
        • 2.Sg5#
        • 2.Qe3#
      • 1...Bb6
        • 2.Sf6#
      • 1...Bd8
        • 2.Qe3#
      • 1...Sf4+!
    • 1.g3?
      • threat
        • 2.Qh1#
      • 1...Kf3
        • 2.Qh1#
      • 1...d2
        • 2.Qxe2#
      • 1...hxg3!
  • Keys
    • 1.Bd4!
      • threat
        • 2.Sg5#
      • 1...Rb6+
        • 2.Bxb6#
      • 1...Rxd4
        • 2.Rxd4#
      • 1...d2
        • 2.Qxe2#
      • 1...Bf4
        • 2.Sf6#
      • 1...Bd8
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • R(c);OGATE::R(E),XR(c)
    • R(c);OGATE::R1(E),XR(c)
    • B(i);SBLOCK::S(F)
    • B(i);SBLOCK::S(I)
    • P(e);N_GUARD::P(B)
  • Tries
    • Try
      • B(H);N_PINS(a),P_PINS(h)
      • Threat
        • S(F)
      • Vars
        • S(a);CHECK,OGATEB::QAR(A)+B(H),XS(a)
        • P(b);OGATEB::QAB(A)
        • B(i);SBLOCK::S(I)
      • Refutation
        • B(i);
    • Try
      • Q(A);N_PINS(a),P_PINS(h)
      • Threat
        • DUALS(2)
      • Vars
        • B(i);::S(F)
        • B(i);::QAR1(A)
      • Refutation
        • S(a);CHECK
    • Try
      • P(C);
      • Threat
        • QAB(A)
      • Vars
        • K(d);N_SPINR(c),N_SPINS(a),P_SPINS(h),S_FLIGHT::QAB(A)
        • P(b);N_GUARD::QAR2(A),XS(a)
      • Refutation
        • P(f);XP(C)
  • Actual
    • B(H);N_PINR(c)
    • Threat
      • S(I)
    • Vars
      • R(c);CHECK,OGATEB::R(E)+B(H),XR(c)
      • R(c);OGATE,P_SPINR(c),XB(H)::R1(E),XR(c)
      • P(b);N_GUARD::QAR2(A),XS(a)
      • B(i);SBLOCK::S(F)
      • B(i);N_GUARD::S(I)
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