MESON Chess Problem Database

Problem Display
PID: 102398 (4r3/3p1p2/3pb3/N1R4Q/1P1kp1p1/1P2p1N1/4pnK1/1B2R1n1 w - - 0 1)

Elbaz, Mohamed Jamal

Europe Echecs, 1990

4r3/3p1p2/3pb3/N1R4Q/1P1kp1p1/1P2p1N1/4pnK1/1B2R1n1

#2

9 + 12

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bxb3
      • 2.Sf5#
      • 2.Sxb3#
    • 1...Bc4
      • 2.Rxc4#
    • 1...Bd5
      • 2.Qxd5#
    • 1...Bf5
      • 2.Sxf5#
    • 1...Sf3
      • 2.Sxe2#
    • 1...Sgh3
      • 2.Sxe2#
    • 1...dxc5
      • 2.Qxc5#
  • Tries
    • 1.Kxg1?
      • threat
        • 2.Sxe2#
      • 1...Bc4
        • 2.Rxc4#
      • 1...Sh3+!
    • 1.Qg5?
      • threat
        • 2.Qf6#
      • 1...Bxb3
        • 2.Sf5#
        • 2.Sxb3#
      • 1...dxc5
        • 2.Qxc5#
      • 1...Bc4
        • 2.Rxc4#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Bf5
        • 2.Sxf5#
      • 1...Sf3
        • 2.Sxe2#
      • 1...f6
        • 2.Qxf6#
      • 1...Sd3!
    • 1.Qh8+?
      • 1...f6
        • 2.Qxf6#
      • 1...Rxh8!
  • Keys
    • 1.Qf5!
      • threat
        • 2.Qf6#
      • 1...Bxb3
        • 2.Sxb3#
      • 1...Bxf5
        • 2.Sxf5#
      • 1...dxc5
        • 2.Qxc5#
      • 1...Bc4
        • 2.Rxc4#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Sf3
        • 2.Sxe2#
      • 1...Sd3
        • 2.Qxe4#
      • 1...f6
        • 2.Qxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(i);N_GUARD::R1(H),XB(i)
    • B(i);N_GUARD::QAR1(I),XB(i)
    • B(i);N_GUARD::S(E),XB(i)
    • S(a);N_GUARD::S(E),XP(b)
    • P(h);OGATE,XR(H)::QAB1(I),XP(h)
  • Tries
    • Try
      • K(C);P-FLIGHT,XS(a)
      • Threat
        • S(E),XP(b)
      • Vars
        • B(i);N_GUARD::R1(H),XB(i)
      • Refutation
        • S(c);CHECK
    • Try
      • Q(I);
      • Threat
        • QAB(I)
      • Vars
        • P(h);OGATE,XR(H)::QAB1(I),XP(h)
        • B(i);N_GUARD::R1(H),XB(i)
        • B(i);N_GUARD::QAR1(I),XB(i)
        • B(i);N_GUARD::S(E),XB(i)
        • S(a);N_GUARD::S(E),XP(b)
        • P(k);::QAB(I),XP(k)
      • Refutation
        • S(c);
    • Try
      • Q(I);CHECK
      • Vars
        • P(k);P_SPINP(k)::QAB(I),XP(k)
      • Refutation
        • R(l);XQ(I)
  • Actual
    • Q(I);
    • Threat
      • QAB(I)
    • Vars
      • B(i);XP(D)::S(G),XB(i)
      • B(i);XQ(I)::S(E),XB(i)
      • P(h);OGATE,XR(H)::QAB1(I),XP(h)
      • B(i);N_GUARD::R1(H),XB(i)
      • B(i);N_GUARD::QAR1(I),XB(i)
      • S(a);N_GUARD::S(E),XP(b)
      • S(c);N_GUARD::QAR1(I),XP(f)
      • P(k);::QAB(I),XP(k)
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