MESON Chess Problem Database

Problem Display
PID: 207162 (8/2Kp2N1/2p5/3kr1Q1/3P4/1N1P4/B3r3/2n5 w - - 0 1)

Coufal, Miroslav

Sachova skladba, 1991

8/2Kp2N1/2p5/3kr1Q1/3P4/1N1P4/B3r3/2n5

#2

7 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Rxa2
      • 2.Qxe5#
    • 1...Rb2
      • 2.Qxe5#
    • 1...Rc2
      • 2.Qxe5#
    • 1...Rd2
      • 2.Qxe5#
    • 1...Rf2
      • 2.Qxe5#
    • 1...Rg2
      • 2.Qxe5#
    • 1...Rh2
      • 2.Qxe5#
  • Tries
    • 1.Sxc1+?
      • 1...Rxa2
        • 2.Qxe5#
      • 1...Kxd4!
    • 1.Qxc1?
      • threat
        • 2.Qc4#
        • 2.Qc5#
      • 1...c5
        • 2.Qc4#
        • 2.Qxc5#
      • 1...d6
        • 2.Qc4#
        • 2.Qxc6#
      • 1...Rc2!
  • Keys
    • 1.Se6!
      • threat
        • 2.Sf4#
      • 1...Kxe6
        • 2.Sc5#
      • 1...Sxb3
        • 2.Bxb3#
      • 1...Sxd3
        • 2.Sd2#
      • 1...dxe6
        • 2.Qd8#
      • 1...Rf2
        • 2.Qxe5#
      • 1...Re4
        • 2.Sxc1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 6
  • Sets
    • R(b);N_GUARD,XB(A)::QAR1(E),XR(d)
    • R(b);N_GUARD::QAR1(E),XR(d)
  • Tries
    • Try
      • S(B);CHECK,XS(a)
      • Vars
        • R(b);XB(A)::QAR1(E),XR(d)
      • Refutation
        • K(c);N_SPINR(d),P-FLIGHT,XP(D)
    • Try
      • Q(E);N_PINR(d),XS(a)
      • Threat
        • DUALS(2)
      • Refutation
        • R(b);
  • Actual
    • S(G);
    • Threat
      • S(G)
    • Vars
      • K(c);N_SPINR(d),S_FLIGHT,XS(G)::B(A)+S(B),DCHECK
      • S(a);OGATE,P_SPINS(a),XS(B)::B(A),XS(a)
      • S(a);N_GUARD,XP(C)::B(A)+S(B)
      • P(f);OGATEB,SBLOCK,XS(G)::QAR(E)
      • R(b);N_GUARD::QAR1(E),XR(d)
      • R(b);N_GUARD::B(A)+S(B),XS(a)
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