MESON Chess Problem Database

Problem Display
PID: 235181 (1K1B1R2/3B1p2/2pk4/1p3p2/bP3P2/1n1NpP2/QP2P3/3R4 w - - 0 1)

Groeneveld, Cornelis

Schach, 1982

1K1B1R2/3B1p2/2pk4/1p3p2/bP3P2/1n1NpP2/QP2P3/3R4

#2

12 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Se5#
    • 1...Kxd7
      • 2.Sc5#
  • Tries
    • 1.Sc1+?
      • 1...Sd4
        • 2.Rxd4#
      • 1...Sd2!
    • 1.Se1+?
      • 1...Sd4
        • 2.Rxd4#
      • 1...Sd2!
    • 1.Sf2+?
      • 1...Sd4
        • 2.Rxd4#
      • 1...Sd2!
    • 1.Sc5+?
      • 1...Sd4
        • 2.Rxd4#
      • 1...Sd2!
    • 1.Se5+?
      • 1...Sd4
        • 2.Rxd4#
      • 1...Sd2!
    • 1.Rxf7?
      • 1...Kd5
        • 2.Se5#
      • 1...Sd2
        • 2.Bc7#
        • 2.Qe6#
      • 1...Sa1
        • 2.Bc7#
        • 2.Qe6#
      • 1...Sc1
        • 2.Bc7#
        • 2.Qe6#
      • 1...Sd4
        • 2.Bc7#
      • 1...Sa5
        • 2.Bc7#
        • 2.Qe6#
      • 1...Sc5
        • 2.Bc7#
        • 2.bxc5#
      • 1...c5!
    • 1.Qxb3?
      • threat
        • 2.Sc1#
        • 2.Se1#
        • 2.Sf2#
        • 2.Sc5#
        • 2.Se5#
      • 1...Kxd7
        • 2.Sc1#
        • 2.Se1#
        • 2.Sf2#
        • 2.Sc5#
        • 2.Se5#
      • 1...c5
        • 2.Sc1#
        • 2.Se1#
        • 2.Sf2#
        • 2.Sxc5#
        • 2.Se5#
      • 1...Bxb3!
  • Keys
    • 1.Bxc6!
      • 1...Kxc6
        • 2.Se5#
      • 1...Ke6
        • 2.Sc5#
      • 1...Sd2
        • 2.Qd5#
      • 1...Sa1
        • 2.Qd5#
      • 1...Sc1
        • 2.Qd5#
      • 1...Sd4
        • 2.Qd5#
      • 1...Sa5
        • 2.Qd5#
      • 1...Sc5
        • 2.Qd5#
      • 1...f6
        • 2.Rxf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 2
  • Sets
    • K(g);P-FLIGHT,P_SPINS(a)::R(A)+S(E)
    • K(g);P-FLIGHT,XB(I)::R(A)+S(E),DCHECK
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::R(A),XS(a)
      • Refutation
        • S(a);P_SPINS(a)
    • Try
      • S(E);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::R(A),XS(a)
      • Refutation
        • S(a);P_SPINS(a)
    • Try
      • S(E);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::R(A),XS(a)
      • Refutation
        • S(a);P_SPINS(a)
    • Try
      • S(E);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::R(A),XS(a)
      • Refutation
        • S(a);P_SPINS(a)
    • Try
      • S(E);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::R(A),XS(a)
      • Refutation
        • S(a);P_SPINS(a)
    • Try
      • R(L);XP(h)
      • Vars
        • K(g);P-FLIGHT,P_SPINS(a)::R(A)+S(E)
        • S(a);::B(K)
      • Refutation
        • P(f);
    • Try
      • Q(B);XS(a)
      • Threat
        • DUALS(5)
      • Refutation
        • B(c);XQ(B)
  • Actual
    • B(I);XP(f)
    • Vars
      • K(g);P-FLIGHT,XB(I)::S(E)
      • K(g);P-FLIGHT,P_SPINS(a)::S(E)
      • S(a);OGATE::QAR1(B)
      • P(h);OGATE::R(L),XP(h)
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