MESON Chess Problem Database

Problem Display
PID: 109918 (6b1/3N1p1P/rR1p4/3k3B/6P1/B2PK2n/qp4N1/3QR3 w - - 0 1)

Gaspar, Byron

Agarez MT, 1960

6b1/3N1p1P/rR1p4/3k3B/6P1/B2PK2n/qp4N1/3QR3

#2

11 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qb1
      • 2.Qb3#
    • 1...Qb3
      • 2.Qxb3#
    • 1...Qa1
      • 2.Qb3#
    • 1...Ra4
      • 2.Rxd6#
    • 1...Ra5
      • 2.Rxd6#
    • 1...Ra7
      • 2.Rxd6#
    • 1...Ra8
      • 2.Rxd6#
    • 1...Bxh7
      • 2.Bxf7#
    • 1...Sg1
      • 2.Sf4#
    • 1...Sf2
      • 2.Sf4#
    • 1...Sf4
      • 2.Sxf4#
    • 1...Sg5
      • 2.Sf4#
    • 1...f5
      • 2.hxg8Q#
      • 2.hxg8B#
    • 1...f6
      • 2.hxg8Q#
      • 2.hxg8B#
  • Tries
    • 1.hxg8Q?
      • threat
        • 2.Bxf7#
        • 2.Qxf7#
      • 1...Ke6
        • 2.Qxf7#
      • 1...Sf4
        • 2.Sxf4#
      • 1...Sg5
        • 2.Sf4#
      • 1...Rxb6!
  • Keys
    • 1.Qa4!
      • threat
        • 2.Qe4#
      • 1...Ke6
        • 2.Kd4#
      • 1...Rxa4
        • 2.Rxd6#
      • 1...Bxh7
        • 2.Bxf7#
      • 1...Qc4
        • 2.Qxc4#
      • 1...Sf2
        • 2.Sf4#
      • 1...Sg5
        • 2.Sf4#
      • 1...f5
        • 2.hxg8Q#
        • 2.hxg8B#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • Q(a);N_GUARD::QAB(A)
    • Q(a);N_GUARD,P_PINP(E)::QAB(A),XQ(a)
    • R(e);N_GUARD::R1(I),XP(f)
    • B(h);N_GUARD,XP(K)::B(H),XP(g)
    • S(c);N_GUARD::S(C)
    • S(c);N_GUARD::S(C),XS(c)
    • P(g);::PXB(h)=Q
  • Tries
    • Try
      • P(K);P_PINP(g),XB(h)
      • Threat
        • DUALS(2)
      • Vars
        • K(d);N_SPINP(g),P_SPINP(f),S_FLIGHT::QAB1(K),XP(g)
        • S(c);N_GUARD::S(C),XS(c)
        • S(c);N_GUARD::S(C)
      • Refutation
        • R(e);XR(I)
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • K(d);P_SPINP(f),S_FLIGHT::R(B)+K(F)
      • R(e);N_GUARD,XQ(A)::R1(I),XP(f)
      • B(h);N_GUARD,XP(K)::B(H),XP(g)
      • Q(a);N_GUARD::QAB1(A),XQ(a)
      • S(c);N_GUARD::S(C)
      • P(g);::PXB(h)=Q
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