MESON Chess Problem Database

Problem Display
PID: 107856 (6N1/5N2/K7/P1B1nQn1/4rpr1/4pkp1/6R1/7B w - - 0 1)

Caillaud, Michel

Mat, 1982

6N1/5N2/K7/P1B1nQn1/4rpr1/4pkp1/6R1/7B

#2

8 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ra4
      • 2.Sxe5#
    • 1...Rb4
      • 2.Sxe5#
    • 1...Rc4
      • 2.Sxe5#
    • 1...Rd4
      • 2.Sxe5#
    • 1...Rh4
      • 2.Sxg5#
    • 1...e2
      • 2.Rf2#
  • Tries
    • 1.Qxe4+?
      • 1...Sxe4
        • 2.Sxe5#
      • 1...Kxe4!
    • 1.Qxg4+?
      • 1...Sxg4
        • 2.Sxg5#
      • 1...Kxg4!
  • Keys
    • 1.Sf6!
      • 1...Sexf7
        • 2.Qxg4#
      • 1...Sgxf7
        • 2.Qxe4#
      • 1...Ra4
        • 2.Sxe5#
      • 1...Rb4
        • 2.Sxe5#
      • 1...Rc4
        • 2.Sxe5#
      • 1...Rd4
        • 2.Sxe5#
      • 1...Rh4
        • 2.Sxg5#
      • 1...Sd3
        • 2.Qxg4#
      • 1...Sc4
        • 2.Qxg4#
      • 1...Sc6
        • 2.Qxg4#
      • 1...Sg6
        • 2.Qxg4#
      • 1...Sd7
        • 2.Qxg4#
      • 1...Sh3
        • 2.Qxe4#
      • 1...Se6
        • 2.Qxe4#
      • 1...Sh7
        • 2.Qxe4#
      • 1...e2
        • 2.Rf2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
    • R(d);N_GUARD,P_PINP(C)::S(G),XS(g)
    • R(d);N_GUARD::S(G),XS(g)
    • R(f);N_GUARD::S(G),XS(h)
    • P(a);::B(A)+R(B),DCHECK
  • Tries
    • Try
      • Q(E);CHECK,N_PINP(e),XR(d)
      • Vars
        • S(h);SBLOCK,XQ(E)::S(G),XS(g)
      • Refutation
        • K(b);S_FLIGHT,XQ(E)
    • Try
      • Q(E);CHECK,N_PINP(e),XR(f)
      • Vars
        • S(g);SBLOCK,XQ(E)::S(G),XS(h)
      • Refutation
        • K(b);P_SPINP(c),S_FLIGHT,XQ(E)
  • Actual
    • S(H);
    • Vars
      • S(g);N_GUARD,XS(G)::QAB1(E),XR(f)
      • S(h);N_GUARD,XS(G)::QAB1(E),XR(d)
      • R(d);N_GUARD,P_PINP(C)::S(G),XS(g)
      • R(d);N_GUARD::S(G),XS(g)
      • R(f);N_GUARD::S(G),XS(h)
      • S(g);N_GUARD::QAB1(E),XR(f)
      • S(h);N_GUARD::QAB1(E),XR(d)
      • P(a);::B(A)+R(B),DCHECK
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