MESON Chess Problem Database

Problem Display
PID: 178993 (1br2B2/pQn2N2/p7/8/P1k3B1/1N2r2R/KPPqP3/7b w - - 0 1)

Thomas, Georg

Prize, Magasinet, 1939

1br2B2/pQn2N2/p7/8/P1k3B1/1N2r2R/KPPqP3/7b

#2

11 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qc1
      • 2.Sd6#
    • 1...Qe1
      • 2.Sd6#
    • 1...Qc3
      • 2.Sd6#
    • 1...Qa5
      • 2.Sd6#
    • 1...Qxc2
      • 2.Sd6#
    • 1...Qxe2
      • 2.Sd6#
    • 1...Qd4
      • 2.Sa5#
    • 1...Qd5
      • 2.Qb4#
    • 1...Qd6
      • 2.Sxd6#
    • 1...Rc3
      • 2.Se5#
    • 1...Rd3
      • 2.Se5#
    • 1...Rf3
      • 2.Se5#
      • 2.Qc6#
    • 1...Rg3
      • 2.Se5#
    • 1...Rxh3
      • 2.Se5#
    • 1...Re4
      • 2.Qc6#
    • 1...Re5
      • 2.Sxe5#
    • 1...Be4
      • 2.Se5#
    • 1...Bd5
      • 2.Sd6#
    • 1...Bc6
      • 2.Qxc6#
    • 1...Sd5
      • 2.Qxa6#
  • Keys
    • 1.Rh4!
      • threat
        • 2.Be6#
      • 1...Qd4
        • 2.Sa5#
      • 1...Qd5
        • 2.Qb4#
      • 1...Re4
        • 2.Qc6#
      • 1...Re6
        • 2.Bxe6#
      • 1...Be4
        • 2.Se5#
      • 1...Bd5
        • 2.Sd6#
      • 1...Sd5
        • 2.Qxa6#
      • 1...Se6
        • 2.Bxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 13
  • Sets
    • Q(b);N_GUARD::S(J)
    • Q(b);N_GUARD,P_PINP(G)::S(J)
    • Q(b);N_GUARD,P_PINP(B),XP(C)::S(J)
    • Q(b);N_GUARD,XP(D)::S(J)
    • Q(b);N_GUARD,SBLOCK::S(E)
    • Q(b);N_GUARD,SBLOCK::QAR1(I)
    • Q(b);N_GUARD::S(J),XQ(b)
    • R(c);N_GUARD::S(J)
    • R(c);N_GUARD,XR(F)::S(J)
    • R(c);S_CUTB(a)::QAR2(I)
    • R(c);N_GUARD::S(J),XR(c)
    • B(a);S_CUTR(c)::S(J)
    • B(a);S_CUTQ(b)::S(J)
    • B(a);N_GUARD::QAR2(I),XB(a)
    • S(g);N_GUARD,SBLOCK::QAB(I),XP(e)
  • Actual
    • R(F);
    • Threat
      • R(F)+B(H),DCHECK
    • Vars
      • Q(b);N_GUARD,SBLOCK::S(E)
      • Q(b);N_GUARD,SBLOCK::QAR1(I)
      • R(c);S_CUTB(a)::QAR2(I)
      • R(c);::R(F)+B(H),DCHECK,XR(c)
      • B(a);S_CUTR(c)::S(J)
      • B(a);S_CUTQ(b)::S(J)
      • S(g);N_GUARD,SBLOCK::QAB(I),XP(e)
      • S(g);::R(F)+B(H),DCHECK,XS(g)
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