MESON Chess Problem Database

Problem Display
PID: 102825 (BB6/p2P4/Kn6/5pp1/1Q1R4/N1p1kp2/3bp2R/1b6 w - - 0 1)

Bettmann, ?

Bettmann, Edgar

Ottawa Citizen, 1886

BB6/p2P4/Kn6/5pp1/1Q1R4/N1p1kp2/3bp2R/1b6

#2

8 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ba2
      • 2.Sc2#
    • 1...Bc2
      • 2.Sxc2#
    • 1...c2
      • 2.Qxd2#
    • 1...f2
      • 2.Rh3#
    • 1...g4
      • 2.Bf4#
  • Tries
    • 1.Qxc3+?
      • 1...Bd3+
        • 2.Rxd3#
        • 2.Qxd3#
      • 1...Bxc3!
    • 1.Qe7+?
      • 1...Be4
        • 2.Sc2#
      • 1...Kxd4!
  • Keys
    • 1.Qc5!
      • 1...Bd3+
        • 2.Rc4#
      • 1...Sxd7
        • 2.Sc4#
        • 2.Rxd7#
      • 1...Sxa8
        • 2.Sc4#
      • 1...e1Q
        • 2.Rdxd2#
      • 1...e1S
        • 2.Rdxd2#
      • 1...e1B
        • 2.Rdxd2#
      • 1...e1R
        • 2.Rdxd2#
      • 1...Ba2
        • 2.Sc2#
        • 2.Qe5#
      • 1...Bc2
        • 2.Sxc2#
      • 1...Be4
        • 2.Rd5#
      • 1...Bc1
        • 2.Rd1#
      • 1...Be1
        • 2.Rd1#
      • 1...Sa4
        • 2.Sc4#
      • 1...Sc4
        • 2.Sxc4#
      • 1...Sd5
        • 2.Sc4#
      • 1...Sc8
        • 2.Sc4#
      • 1...c2
        • 2.Qe5#
      • 1...f2
        • 2.Rh3#
      • 1...f4
        • 2.Rd6#
      • 1...g4
        • 2.Bf4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 14
    • REMOVED MATES = 1
  • Sets
    • B(a);N_GUARD::S(B)
    • B(a);N_GUARD::S(B),XB(a)
    • P(d);OGATE::QAB1(C),XB(b)
    • P(f);OGATEB,SBLOCK::R(A)
    • P(h);N_GUARD::B(H)
  • Tries
    • Try
      • Q(C);CHECK,XP(d)
      • Refutation
        • B(b);XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • B(a);P_SPINB(a)::S(B)
      • Refutation
        • K(e);S_FLIGHT,XR(D)
  • Actual
    • Q(C);
    • Vars
      • B(a);CHECK,SBLOCK::QAB(C)+R(D)
      • S(i);N_GUARD,XB(G)::S(B)
      • P(c);::QAB(C)+R(D),XB(b)
      • B(a);N_GUARD::S(B),XB(a)
      • B(a);SBLOCK::QAB(C)+R(D)
      • B(b);OGATE::QAB(C)+R(D)
      • S(i);N_GUARD::S(B)
      • S(i);N_GUARD::S(B),XS(i)
      • P(d);S_CUTB(a)::QAR2(C)
      • P(f);OGATEB,SBLOCK::R(A)
      • P(g);SBLOCK::QAB(C)+R(D)
      • P(h);N_GUARD::B(H)
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