MESON Chess Problem Database

Problem Display
PID: 42897 (4q3/2R2p1b/p2B4/1P1pP1Np/3k4/2N4Q/2n1B1p1/1n2R1K1 w - - 0 1)

Zarur, Almiro Elias

1st HM., Nanning MT (Probleemblad), 1959

4q3/2R2p1b/p2B4/1P1pP1Np/3k4/2N4Q/2n1B1p1/1n2R1K1

#2

10 + 10

3147 Chess Problems: Introduction to an Art 1963

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe5
      • 2.Bc5#
    • 1...Bd3
      • 2.Qxd3#
    • 1...Bg8
      • 2.Qd3#
    • 1...Sxc3
      • 2.Qxc3#
    • 1...Se3
      • 2.Sf3#
    • 1...f5
      • 2.Qd3#
  • Tries
    • 1.Bc4?
      • threat
        • 2.Se2#
      • 1...Qxe5
        • 2.Bxe5#
      • 1...Sxc3
        • 2.Sf3#
      • 1...dxc4
        • 2.Bc5#
      • 1...Bd3
        • 2.Qxd3#
      • 1...Qc6!
    • 1.Rd1+?
      • 1...Bd3
        • 2.Rxd3#
        • 2.Qxd3#
      • 1...Sd2!
    • 1.Qe3+?
      • 1...Sxe3
        • 2.Sf3#
      • 1...Kxe3!
  • Keys
    • 1.Bd3!
      • threat
        • 2.Se2#
      • 1...Qxe5
        • 2.Bxe5#
      • 1...Bxd3
        • 2.Sf3#
      • 1...Sxc3
        • 2.Bc5#
      • 1...Se3
        • 2.Qxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • Q(j);SBLOCK,XP(G)::B(I)
    • B(i);N_GUARD::QAR1(E),XB(i)
    • B(i);N_GUARD::QAR1(E)
    • S(a);OGATE,XS(D)::QAB1(E),XS(a)
    • S(b);SBLOCK::S(H)
    • P(h);S_CUTB(i)::QAR1(E)
  • Tries
    • Try
      • B(C);
      • Threat
        • S(D)
      • Vars
        • Q(j);OGATE,XP(G)::B(I),XQ(j)
        • S(a);SBLOCK,XS(D)::S(H)
        • P(e);SBLOCK,XB(C)::B(I)
        • B(i);N_GUARD::QAR1(E),XB(i)
      • Refutation
        • Q(j);
    • Try
      • R(A);CHECK
      • Refutation
        • S(a);P_SPINS(a)
    • Try
      • Q(E);CHECK
      • Vars
        • S(b);SBLOCK,XQ(E)::S(H)
      • Refutation
        • K(d);S_FLIGHT,XQ(E)
  • Actual
    • B(C);
    • Threat
      • S(D)
    • Vars
      • Q(j);OGATE,XP(G)::B(I),XQ(j)
      • B(i);SBLOCK,XB(C)::S(H)
      • S(a);SBLOCK,XS(D)::B(I)
      • S(b);N_GUARD::QAB1(E),XS(b)
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