MESON Chess Problem Database

Problem Display
PID: 159742 (8/8/2pQp3/1p1p1p2/3k4/P2P2P1/3B1p2/2Kn1B2 w - - 0 1)

Alekseev, Yuri Mikhailovich

Source?, 1980

8/8/2pQp3/1p1p1p2/3k4/P2P2P1/3B1p2/2Kn1B2

#2

7 + 8

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...c5
      • 2.Qf4#
    • 1...e5
      • 2.Qb4#
  • Tries
    • 1.Bc3+?
      • 1...Kxc3
        • 2.Qb4#
      • 1...Ke3
        • 2.Qf4#
      • 1...Sxc3!
    • 1.Be3+?
      • 1...Kc3
        • 2.Qb4#
      • 1...Kxe3
        • 2.Qf4#
      • 1...Sxe3!
    • 1.Bf4?
      • threat
        • 2.Qb4#
      • 1...Kc3
        • 2.Qb4#
      • 1...Se3
        • 2.Be5#
      • 1...b4
        • 2.Qxb4#
      • 1...c5
        • 2.Qe5#
      • 1...Sb2!
  • Keys
    • 1.Bb4!
      • threat
        • 2.Qf4#
      • 1...Ke3
        • 2.Qf4#
      • 1...Sc3
        • 2.Bc5#
      • 1...f4
        • 2.Qxf4#
      • 1...e5
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • P(g);SBLOCK::QAR2(G)
    • P(h);SBLOCK::QAR2(G)
  • Tries
    • Try
      • B(C);CHECK
      • Vars
        • K(c);N_SPINP(e),S_FLIGHT,XB(C)::QAB1(G)
        • K(c);N_SPINP(e),S_FLIGHT::QAB1(G)
      • Refutation
        • S(a);XB(C)
    • Try
      • B(C);CHECK
      • Vars
        • K(c);N_SPINP(e),S_FLIGHT::QAB1(G)
        • K(c);N_SPINP(e),S_FLIGHT,XB(C)::QAB1(G)
      • Refutation
        • S(a);XB(C)
    • Try
      • B(C);
      • Threat
        • QAR2(G)
      • Vars
        • K(c);N_SPINP(e),S_FLIGHT::QAB1(G)
        • S(a);SBLOCK::B(C)
        • P(d);::QAR2(G),XP(d)
        • P(g);SBLOCK::QAB1(G)
      • Refutation
        • S(a);
  • Actual
    • B(C);
    • Threat
      • QAR2(G)
    • Vars
      • K(c);N_SPINP(e),S_FLIGHT::QAB1(G)
      • S(a);SBLOCK::B(C)
      • P(f);::QAR2(G),XP(f)
      • P(h);SBLOCK::QAB1(G)
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