MESON Chess Problem Database

Problem Display
PID: 147989 (4B3/8/4n3/1R1NK3/3P4/p2pB3/b1kPP3/Q1bn3R w - - 0 1)

Roe, RE

Chess, 1955

4B3/8/4n3/1R1NK3/3P4/p2pB3/b1kPP3/Q1bn3R

#2

10 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Bb2
      • 2.Qxd1#
    • 1...Bxd2
      • 2.Qxd1#
    • 1...Bb1
      • 2.Qxb1#
    • 1...Bb3
      • 2.Sb4#
    • 1...Bc4
      • 2.Qb1#
    • 1...Bxd5
      • 2.Qb1#
    • 1...Sb2
      • 2.Rxc1#
      • 2.Qxc1#
    • 1...Sf2
      • 2.Rxc1#
      • 2.Qc3#
      • 2.Qxc1#
    • 1...Sc3
      • 2.Rxc1#
      • 2.Qxc3#
      • 2.Qxc1#
    • 1...Sxe3
      • 2.Qc3#
      • 2.Qxc1#
    • 1...dxe2
      • 2.Bg6#
  • Tries
    • 1.Qxa2+?
      • 1...Sb2
        • 2.Sb4#
      • 1...Bb2!
  • Keys
    • 1.Bf7!
      • 1...Bxd2
        • 2.Qxd1#
      • 1...Bxd5
        • 2.Qb1#
      • 1...Sxe3
        • 2.Qc3#
        • 2.Qxc1#
      • 1...Sxd4
        • 2.Sb4#
      • 1...dxe2
        • 2.Bg6#
      • 1...Sf4
        • 2.Sb4#
      • 1...Bb2
        • 2.Qxd1#
      • 1...Bb1
        • 2.Qxb1#
      • 1...Bb3
        • 2.Sb4#
      • 1...Bc4
        • 2.Qb1#
      • 1...Sb2
        • 2.Rxc1#
        • 2.Qxc1#
      • 1...Sf2
        • 2.Rxc1#
        • 2.Qc3#
        • 2.Qxc1#
      • 1...Sc3
        • 2.Rxc1#
        • 2.Qxc3#
        • 2.Qxc1#
      • 1...Sc5
        • 2.Sb4#
      • 1...Sg5
        • 2.Sb4#
      • 1...Sc7
        • 2.Sb4#
      • 1...Sg7
        • 2.Sb4#
      • 1...Sd8
        • 2.Sb4#
      • 1...Sf8
        • 2.Sb4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • B(a);OGATE,P_PINP(F)::QAB1(A),XS(b)
    • B(a);OGATE,XP(C)::QAB1(A),XS(b)
    • B(c);N_GUARD::QAB1(A),XB(c)
    • B(c);SBLOCK::S(H)
    • B(c);N_GUARD::QAB1(A)
    • B(c);N_GUARD,XS(H)::QAB1(A)
    • P(f);OGATEB,XP(D)::B(J)
  • Tries
    • Try
      • Q(A);CHECK,XB(c)
      • Vars
        • S(b);P_SPINS(b)::S(H)
      • Refutation
        • B(a);P_PINP(F),P_SPINB(a)
  • Actual
    • B(J);
    • Vars
      • B(a);OGATE,XP(C)::QAB1(A),XS(b)
      • B(c);N_GUARD,XS(H)::QAB1(A)
      • S(g);XP(F)::S(H)
      • P(f);OGATEB,XP(D)::B(J)
      • S(g);::S(H)
      • B(a);OGATE,P_PINP(F)::QAB1(A),XS(b)
      • B(c);N_GUARD::QAB1(A),XB(c)
      • B(c);SBLOCK::S(H)
      • B(c);N_GUARD::QAB1(A)
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