MESON Chess Problem Database

Problem Display
PID: 45660 (1B1K4/n7/R1b1kNB1/8/4N3/1qPpR2n/Q7/br6 w - - 0 1)

Schlotterbeck, Benno

Recomm., BCF 057. Ty., 1947-1948

1B1K4/n7/R1b1kNB1/8/4N3/1qPpR2n/Q7/br6

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qc4
      • 2.Qxc4#
    • 1...Qd5+
      • 2.Qxd5#
    • 1...Rc1
      • 2.Qxb3#
    • 1...Rd1
      • 2.Qxb3#
    • 1...Re1
      • 2.Qxb3#
    • 1...Rf1
      • 2.Qxb3#
    • 1...Rg1
      • 2.Qxb3#
    • 1...Rh1
      • 2.Qxb3#
    • 1...Bb2
      • 2.Qxb3#
  • Tries
    • 1.Be5?
      • threat
        • 2.Sc5#
      • 1...Qd5+
        • 2.Qxd5#
      • 1...Kxe5!
    • 1.Rf3?
      • threat
        • 2.Sc5#
      • 1...Qd5+
        • 2.Qxd5#
      • 1...Sf4!
  • Keys
    • 1.Sh5!
      • threat
        • 2.Sef6#
      • 1...Qd5+
        • 2.Sd6#
      • 1...Kd5
        • 2.Bf7#
      • 1...Bxc3
        • 2.Sxc3#
      • 1...Re1
        • 2.Qxb3#
      • 1...Sf2
        • 2.Sf4#
      • 1...Sg5
        • 2.Sf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 7
  • Sets
    • Q(c);OGATE::QAB(A),XQ(c)
    • Q(c);CHECK,OGATE::QAB1(A),XQ(c)
    • R(b);N_GUARD::QAB(A),XQ(c)
    • B(a);S_CUTR(b)::QAB(A),XQ(c)
  • Tries
    • Try
      • B(H);
      • Threat
        • S(D)
      • Vars
        • Q(c);CHECK,OGATE::QAB1(A),XQ(c)
      • Refutation
        • K(g);N_SPINB(f),N_SPINQ(c),P-FLIGHT,XB(H)
    • Try
      • R(C);
      • Threat
        • S(D)
      • Vars
        • Q(c);CHECK,OGATE::QAB1(A),XQ(c)
      • Refutation
        • S(e);
  • Actual
    • S(F);
    • Threat
      • R(C)+S(D)
    • Vars
      • Q(c);CHECK::R(C)+S(D)
      • K(g);N_SPINB(f),S_FLIGHT::B(G)
      • B(a);XP(B)::R(C)+S(D),XB(a)
      • R(b);N_GUARD::QAB(A),XQ(c)
      • S(e);N_GUARD::S(F)
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