MESON Chess Problem Database

Problem Display
PID: 162134 (4r2B/p2N1Q2/b1qR4/3np2p/BPk5/1R6/2n1P3/7K w - - 0 1)

Thomas, Georg

Thema Danicum, 1981

4r2B/p2N1Q2/b1qR4/3np2p/BPk5/1R6/2n1P3/7K

#2

9 + 9

15601 Albrecht-Leiss-Degener Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qf4#
    • 1...Qxa4
      • 2.Qxd5#
    • 1...Qxd7
      • 2.Qxd5#
    • 1...Qb6
      • 2.Qxd5#
    • 1...Qc7
      • 2.Qxd5#
    • 1...Qc8
      • 2.Qxd5#
    • 1...e4
      • 2.Rxc6#
  • Tries
    • 1.Sxe5+?
      • 1...Kd4
        • 2.Qf4#
      • 1...Rxe5!
    • 1.Sb6+?
      • 1...Kd4
        • 2.Qf4#
      • 1...Qxb6
        • 2.Qxd5#
      • 1...axb6!
    • 1.Qf4+?
      • 1...Sd4
        • 2.Rxc6#
      • 1...exf4
        • 2.Rxc6#
      • 1...e4
        • 2.Rxc6#
      • 1...Sxf4+!
  • Keys
    • 1.Qf3!
      • threat
        • 2.Qd3#
      • 1...Kd4
        • 2.Qf4#
      • 1...Scxb4
        • 2.Qe4#
      • 1...Sdxb4
        • 2.Rc3#
      • 1...Se1
        • 2.Qe4#
      • 1...Sce3
        • 2.Qe4#
      • 1...Sc3
        • 2.Qxc6#
      • 1...Sde3
        • 2.Qxc6#
      • 1...Sf4
        • 2.Qxc6#
      • 1...Sb6
        • 2.Qxc6#
      • 1...Sf6
        • 2.Qxc6#
      • 1...Sc7
        • 2.Qxc6#
      • 1...Se7
        • 2.Sxe5#
      • 1...e4
        • 2.Rxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 5
  • Sets
    • K(b);P-FLIGHT,P_SPINP(d)::QAR2(H)
    • Q(g);N_GUARD,XB(D)::QAB1(H),XS(c)
    • Q(g);N_GUARD,XS(G)::QAB1(H),XS(c)
    • Q(g);N_GUARD::QAB1(H),XS(c)
    • P(d);::R(F),XQ(g)
  • Tries
    • Try
      • S(G);CHECK,XP(d)
      • Vars
        • K(b);P-FLIGHT::QAR2(H)
      • Refutation
        • R(i);XS(G)
    • Try
      • S(G);CHECK
      • Vars
        • K(b);P-FLIGHT,P_SPINP(d)::QAR2(H)
        • Q(g);XS(G)::QAB1(H),XS(c)
      • Refutation
        • P(h);XS(G)
    • Try
      • Q(H);CHECK,N_PINS(c)
      • Vars
        • S(a);P_SPINS(a)::R(F),XQ(g)
        • P(d);XQ(H)::R(F),XQ(g)
        • P(d);P_SPINP(d)::R(F),XQ(g)
      • Refutation
        • S(c);CHECK,XQ(H)
  • Actual
    • Q(H);N_PINS(c)
    • Threat
      • QAB1(H)
    • Vars
      • K(b);P-FLIGHT,P_SPINP(d),P_SPINS(c)::QAR2(H)
      • S(a);N_GUARD,XP(E)::QAR2(H)
      • S(c);N_GUARD,P_PINQ(H),SBLOCK,XP(E)::R1(C)
      • S(a);N_GUARD::QAR2(H)
      • S(c);OGATE,P_PINQ(H)::QAR2(H),XQ(g)
      • S(c);P_PINQ(H),S_CUTR(i)::S(G),XP(d)
      • P(d);::R(F),XQ(g)
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