MESON Chess Problem Database

Problem Display
PID: 108204 (8/3N4/3p4/1p2pPK1/2p1k3/4p3/Q1P1r1P1/N4B2 w - - 0 1)

Bewitt, Charles

Matou, 1992

8/3N4/3p4/1p2pPK1/2p1k3/4p3/Q1P1r1P1/N4B2

#2

8 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...b4
      • 2.Qxc4#
  • Tries
    • 1.Sb3?
      • threat
        • 2.Sf6#
      • 1...Rxg2+
        • 2.Bxg2#
      • 1...Kd5
        • 2.Qa8#
      • 1...cxb3!
    • 1.Qa7?
      • threat
        • 2.Sf6#
      • 1...Rxg2+
        • 2.Bxg2#
      • 1...Kd5!
  • Keys
    • 1.c3!
      • 1...Rxg2+
        • 2.Qxg2#
      • 1...Kd3
        • 2.Qc2#
      • 1...Kd5
        • 2.Qa8#
      • 1...Rxa2
        • 2.Sf6#
      • 1...Re1
        • 2.Sf6#
      • 1...Rb2
        • 2.Sf6#
      • 1...Rc2
        • 2.Sf6#
      • 1...Rd2
        • 2.Sf6#
      • 1...Rf2
        • 2.Sf6#
      • 1...b4
        • 2.Qxc4#
      • 1...d5
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
    • P(e);N_GUARD::QAR2(C),XP(c)
  • Tries
    • Try
      • S(A);
      • Threat
        • S(H)
      • Vars
        • R(a);CHECK,OGATE,XP(E)::B(B),XR(a)
        • K(d);S_FLIGHT::QAB(C)
      • Refutation
        • P(c);XS(A)
    • Try
      • Q(C);
      • Threat
        • S(H)
      • Vars
        • R(a);CHECK,OGATE,XP(E)::B(B),XR(a)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • P(D);
    • Vars
      • R(a);CHECK,OGATE,XP(E)::QAB(C),XR(a)
      • K(d);P_SPINR(a),S_FLIGHT::QAB1(C)
      • K(d);P_SPINP(c),S_FLIGHT::QAB(C)
      • R(a);XQ(C)::S(H)
      • R(a);::S(H)
      • P(e);N_GUARD::QAR2(C),XP(c)
      • P(g);N_GUARD,SBLOCK::S(H)
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