MESON Chess Problem Database

Problem Display
PID: 256371 (B1r5/3p1R2/QP2n1r1/3NPN2/4kp1R/b7/4P1nK/Bb6 w - - 0 1)

Hassebroek, H

Probleemblad, 1947

B1r5/3p1R2/QP2n1r1/3NPN2/4kp1R/b7/4P1nK/Bb6

#2

11 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rg3
      • 2.Sxg3#
    • 1...Rf6
      • 2.Sg3#
    • 1...Rh6
      • 2.Sg3#
    • 1...Rc2
      • 2.Qd3#
    • 1...Rc5
      • 2.Sd6#
    • 1...Ba2
      • 2.Qd3#
    • 1...Bd3
      • 2.Qxd3#
    • 1...Bc1
      • 2.Sd6#
    • 1...Bd6
      • 2.Sxd6#
    • 1...Sc5
      • 2.Qc4#
    • 1...Sg5
      • 2.Sg3#
    • 1...Sc7
      • 2.Qc4#
  • Tries
    • 1.Sc7+?
      • 1...d5
        • 2.Bxd5#
      • 1...Rxa8!
    • 1.Qc4+?
      • 1...Sd4
        • 2.Qxd4#
      • 1...Rxc4!
    • 1.Qa4+?
      • 1...Bb4
        • 2.Sd6#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Rc4!
  • Keys
    • 1.Qb5!
      • threat
        • 2.Sc3#
      • 1...Rf6
        • 2.Sg3#
      • 1...Rc3
        • 2.Sxc3#
      • 1...Rc5
        • 2.Sd6#
      • 1...Bc5
        • 2.Qxb1#
      • 1...Sc5
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 9
  • Sets
    • R(g);N_GUARD::S(G),XR(g)
    • R(g);N_GUARD::S(G)
    • R(g);N_GUARD,P_PINR(D)::S(G)
    • R(i);S_CUTB(a)::QAB1(H)
    • R(i);S_CUTB(c)::S(G)
    • B(a);N_GUARD::QAB1(H)
    • B(a);N_GUARD::QAB1(H),XB(a)
    • B(c);N_GUARD::S(G)
    • B(c);N_GUARD::S(G),XB(c)
    • S(f);N_GUARD,S_CUTR(i)::QAR2(H)
    • S(f);S_CUTR(g)::S(G)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • P(h);::B(K),XP(h)
      • Refutation
        • R(i);XB(K)
    • Try
      • Q(H);CHECK
      • Vars
        • S(f);N_GUARD,P_SPINS(f)::QAR1(H),XS(f)
      • Refutation
        • R(i);XQ(H)
    • Try
      • Q(H);CHECK
      • Vars
        • B(c);P_SPINB(c)::S(G)
        • S(f);N_GUARD,P_SPINS(f)::QAR1(H),XS(f)
      • Refutation
        • R(i);P_SPINR(i)
  • Actual
    • Q(H);
    • Threat
      • B(K)+S(E),DCHECK
    • Vars
      • R(g);N_GUARD::S(G)
      • R(i);::B(K)+S(E),DCHECK,XR(i)
      • R(i);S_CUTB(c)::S(G)
      • B(c);S_CUTR(i)::QAB(H),XB(a)
      • S(f);N_GUARD,S_CUTR(i)::QAR2(H)
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Developed and maintained by Brian Stephenson.
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