MESON Chess Problem Database

Problem Display
PID: 2250 (8/1p1p4/pQ6/p1P5/K1k1B3/3r4/2p1N3/nNR5 w - - 0 1)

Cook, Eugene Beauharnais

Source?, 0000

8/1p1p4/pQ6/p1P5/K1k1B3/3r4/2p1N3/nNR5

#2

7 + 8

1679 American Chess Nuts 1868
14907 Good Companion Chess Problem Club 1915

SOLUTION

  • SOUND
  • Sets
    • 1...Rd1
      • 2.Sa3#
    • 1...Rd2
      • 2.Sxd2#
      • 2.Sa3#
    • 1...Ra3+
      • 2.Sxa3#
    • 1...Rb3
      • 2.Sd2#
    • 1...Rc3
      • 2.Sd2#
    • 1...Re3
      • 2.Sd2#
    • 1...Rf3
      • 2.Sd2#
    • 1...Rg3
      • 2.Sd2#
    • 1...Rh3
      • 2.Sd2#
    • 1...Rd4
      • 2.Sa3#
    • 1...Rd5
      • 2.Sa3#
    • 1...Rd6
      • 2.Sa3#
    • 1...Sb3
      • 2.Sa3#
  • Tries
    • 1.Kxa5?
      • threat
        • 2.Qb4#
      • 1...Ra3+
        • 2.Sxa3#
      • 1...Rb3
        • 2.Sd2#
      • 1...Sb3+!
    • 1.Bxd3+?
      • 1...Kd5
        • 2.Qd6#
      • 1...Kxd3!
    • 1.Rxc2+?
      • 1...Rc3
        • 2.Sd2#
        • 2.Sa3#
        • 2.Rxc3#
      • 1...Sxc2!
    • 1.Qxa5?
      • threat
        • 2.Qb4#
      • 1...Ra3+
        • 2.Sxa3#
      • 1...Rb3
        • 2.Sd2#
      • 1...b5+!
  • Keys
    • 1.Qc7!
      • 1...Ra3+
        • 2.Sxa3#
      • 1...b5+
        • 2.cxb5 ep#
      • 1...Rd1
        • 2.Sa3#
      • 1...Rd2
        • 2.Sxd2#
        • 2.Sa3#
      • 1...Rb3
        • 2.Sd2#
      • 1...Rc3
        • 2.Sd2#
      • 1...Re3
        • 2.Sd2#
      • 1...Rf3
        • 2.Sd2#
      • 1...Rg3
        • 2.Sd2#
      • 1...Rh3
        • 2.Sd2#
      • 1...Rd4
        • 2.Sa3#
      • 1...Rd5
        • 2.Sa3#
      • 1...Rd6
        • 2.Sa3#
        • 2.cxd6#
      • 1...Sb3
        • 2.Sa3#
      • 1...b6
        • 2.cxb6#
      • 1...d5
        • 2.cxd5 ep#
      • 1...d6
        • 2.cxd6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • R(c);N_GUARD::S(A)
    • R(c);CHECK,N_GUARD::S(A),XR(c)
    • R(c);N_GUARD,N_SPINP(b)::S(A)
    • S(a);S_CUTR(c)::S(A)
  • Tries
    • Try
      • K(D);P-FLIGHT,XP(e)
      • Threat
        • QAR1(G)
      • Vars
        • R(c);CHECK,N_GUARD::S(A),XR(c)
        • R(c);N_GUARD::S(A)
      • Refutation
        • S(a);CHECK
    • Try
      • B(E);CHECK,XR(c)
      • Vars
        • K(d);N_SPINP(b),S_FLIGHT::QAR1(G)
      • Refutation
        • K(d);N_SPINP(b),S_FLIGHT,XB(E)
    • Try
      • R(B);CHECK,XP(b)
      • Refutation
        • S(a);XR(B)
    • Try
      • Q(G);XP(e)
      • Threat
        • QAR1(G)
      • Vars
        • R(c);CHECK,N_GUARD::S(A),XR(c)
        • R(c);N_GUARD::S(A)
      • Refutation
        • P(g);CHECK
  • Actual
    • Q(G);
    • Vars
      • R(c);CHECK,N_GUARD::S(A),XR(c)
      • P(g);CHECK,OGATE::QAR(G)+P(F),XP(g),EP
      • R(c);N_GUARD::S(A)
      • R(c);N_GUARD,N_SPINP(b)::S(A)
      • S(a);S_CUTR(c)::S(A)
      • P(g);OGATE::QAR(G)+P(F),XP(g)
      • P(h);OGATE::QAR(G)+P(F),XP(h),EP
      • P(h);OGATE::QAR(G)+P(F),XP(h)
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