MESON Chess Problem Database

Problem Display
PID: 120680 (B3b3/B1bpQ3/nr6/Kp6/2pkNprR/5Rn1/8/2N5 w - - 0 1)

Dittrich, Stefan

Muller, Dieter

Mat 05. TT, 1977

B3b3/B1bpQ3/nr6/Kp6/2pkNprR/5Rn1/8/2N5

#2

8 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bd6
      • 2.Qxd6#
    • 1...Bd8
      • 2.Qd6#
    • 1...Sf1
      • 2.Se2#
    • 1...Sh1
      • 2.Se2#
    • 1...Se2
      • 2.Sxe2#
    • 1...Sxe4
      • 2.Se2#
    • 1...Sf5
      • 2.Se2#
    • 1...Sh5
      • 2.Se2#
    • 1...Sb4
      • 2.Qc5#
    • 1...Sc5
      • 2.Qxc5#
    • 1...Sb8
      • 2.Qc5#
    • 1...d6
      • 2.Qf6#
  • Tries
    • 1.Bxb6+?
      • 1...Sc5
        • 2.Qxc5#
      • 1...Bxb6+!
    • 1.Rh1?
      • threat
        • 2.Rd1#
      • 1...Sxh1
        • 2.Se2#
      • 1...Sxe4
        • 2.Se2#
      • 1...Sf1
        • 2.Se2#
      • 1...Sb4
        • 2.Qc5#
      • 1...Sc5
        • 2.Qxc5#
      • 1...c3!
    • 1.Rh2?
      • threat
        • 2.Rd2#
      • 1...Sxe4
        • 2.Se2#
      • 1...Sf1
        • 2.Se2#
      • 1...Se2
        • 2.Sxe2#
      • 1...Sb4
        • 2.Qc5#
      • 1...Sc5
        • 2.Qxc5#
      • 1...c3!
    • 1.Qxd7+?
      • 1...Ke5
        • 2.Qd5#
      • 1...Bd6
        • 2.Qxd6#
      • 1...Bxd7!
  • Keys
    • 1.Sd6!
      • threat
        • 2.Sxb5#
      • 1...Kc5
        • 2.Qe5#
      • 1...Bxd6
        • 2.Qxd6#
      • 1...Rg5
        • 2.Qe3#
      • 1...Sc5
        • 2.Qf6#
      • 1...c3
        • 2.Sb3#
      • 1...b4
        • 2.Sb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 10
  • Sets
    • B(i);N_GUARD::QAR2(G),XB(i)
    • B(i);N_GUARD::QAR2(G)
    • S(a);N_GUARD::S(A)
    • S(a);N_GUARD::S(A),XS(a)
    • S(a);N_GUARD,XS(C)::S(A)
    • S(g);N_GUARD::QAB1(G)
    • S(g);N_GUARD,N_SPINR(h)::QAB1(G),XS(g)
    • P(j);S_CUTB(i)::QAB(G)
  • Tries
    • Try
      • B(F);CHECK,P_SPINB(F),XR(h)
      • Vars
        • S(g);N_GUARD,P_SPINS(g)::QAB1(G),XS(g)
      • Refutation
        • B(i);CHECK,XB(F)
    • Try
      • R(D);
      • Threat
        • R(D)
      • Vars
        • S(a);N_GUARD,XR(D)::S(A)
        • S(a);N_GUARD,XS(C)::S(A)
        • S(a);N_GUARD::S(A)
        • S(g);N_GUARD::QAB1(G)
        • S(g);N_GUARD,N_SPINR(h)::QAB1(G),XS(g)
      • Refutation
        • P(b);
    • Try
      • R(D);
      • Threat
        • R(D)
      • Vars
        • S(a);N_GUARD,XS(C)::S(A)
        • S(a);N_GUARD::S(A)
        • S(a);N_GUARD::S(A),XS(a)
        • S(g);N_GUARD::QAB1(G)
        • S(g);N_GUARD,N_SPINR(h)::QAB1(G),XS(g)
      • Refutation
        • P(b);
    • Try
      • Q(G);CHECK,XP(j)
      • Vars
        • K(c);N_SPINR(h),S_FLIGHT::QAR1(G)
        • B(i);N_GUARD,P_SPINB(i)::QAR2(G),XB(i)
      • Refutation
        • B(k);XQ(G)
  • Actual
    • S(C);
    • Threat
      • S(C),XP(f)
    • Vars
      • K(c);S_FLIGHT::QAR2(G)
      • B(i);OGATE,XS(C)::QAR2(G),XB(i)
      • R(e);P_SPINP(d)::QAB1(G)
      • S(g);N_SPINR(h),SBLOCK::QAB(G)
      • P(b);N_GUARD::S(A)
      • P(f);::S(C)
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