MESON Chess Problem Database

Problem Display
PID: 233835 (8/2N2p2/1P1p4/B2P4/3kNK2/p7/qpQ5/1n6 w - - 0 1)

Holler, Werner

Freie Presse, 2003

8/2N2p2/1P1p4/B2P4/3kNK2/p7/qpQ5/1n6

#2

7 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sd2
      • 2.Qc3#
    • 1...Sc3
      • 2.Qxc3#
  • Tries
    • 1.Sd2?
      • threat
        • 2.Sf3#
      • 1...Sxd2
        • 2.Qc3#
      • 1...Qc4
        • 2.Qxc4#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Qb3
        • 2.Sxb3#
      • 1...Qxd5!
    • 1.Sg3?
      • threat
        • 2.Se2#
        • 2.Sf5#
      • 1...Qxd5
        • 2.Se2#
      • 1...Sc3
        • 2.Qxc3#
      • 1...f5
        • 2.Se2#
        • 2.Sxf5#
      • 1...Qc4!
    • 1.Sxd6?
      • threat
        • 2.Sdb5#
        • 2.Sf5#
      • 1...Qc4
        • 2.Qxc4#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Qb3
        • 2.Sf5#
      • 1...f5
        • 2.Sdb5#
        • 2.Sxf5#
      • 1...Qxd5!
    • 1.Be1?
      • threat
        • 2.Bf2#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Qb3!
    • 1.Bd2?
      • threat
        • 2.Be3#
      • 1...Sxd2
        • 2.Qc3#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Qb3!
    • 1.Bc3+?
      • 1...Sxc3
        • 2.Qxc3#
      • 1...Kc4!
    • 1.Qb3?
      • threat
        • 2.Sb5#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Qxb3!
  • Keys
    • 1.Sc5!
      • 1...Qxd5
        • 2.Sb5#
      • 1...dxc5
        • 2.Qe4#
      • 1...Qc4
        • 2.Qf2#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Qb3
        • 2.Sxb3#
      • 1...Qa1
        • 2.Sb3#
      • 1...Sd2
        • 2.Qc3#
      • 1...f5
        • 2.S5e6#
      • 1...f6
        • 2.S5e6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::QAB1(A)
    • S(a);N_GUARD::QAB1(A),XS(a)
  • Tries
    • Try
      • S(B);
      • Threat
        • S(B)
      • Vars
        • S(a);N_GUARD,XS(B)::QAB1(A)
        • Q(b);N_GUARD::QAR1(A),XQ(b)
        • S(a);N_GUARD::QAB1(A),XS(a)
        • Q(b);N_GUARD::S(B),XQ(b)
      • Refutation
        • Q(b);XP(E)
    • Try
      • S(B);
      • Threat
        • DUALS(2)
      • Vars
        • Q(b);XP(E)::S(B)
        • S(a);N_GUARD::QAB1(A),XS(a)
      • Refutation
        • Q(b);
    • Try
      • S(B);XP(f)
      • Threat
        • DUALS(2)
      • Vars
        • Q(b);N_GUARD::QAR1(A),XQ(b)
        • S(a);N_GUARD::QAB1(A),XS(a)
        • Q(b);::S(B)
      • Refutation
        • Q(b);XP(E)
    • Try
      • B(D);
      • Threat
        • B(D)
      • Vars
        • S(a);N_GUARD::QAB1(A),XS(a)
      • Refutation
        • Q(b);
    • Try
      • B(D);
      • Threat
        • B(D)
      • Vars
        • S(a);N_GUARD,XB(D)::QAB1(A)
        • S(a);N_GUARD::QAB1(A),XS(a)
      • Refutation
        • Q(b);
    • Try
      • B(D);CHECK
      • Vars
        • S(a);OGATE,XB(D)::QAB1(A),XS(a)
      • Refutation
        • K(e);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • S(G)
      • Vars
        • S(a);N_GUARD::QAB1(A),XS(a)
      • Refutation
        • Q(b);XQ(A)
  • Actual
    • S(B);
    • Vars
      • Q(b);SBLOCK,XP(E)::S(G)
      • P(f);SBLOCK,XS(B)::QAR1(A)
      • Q(b);SBLOCK::QAB(A)
      • S(a);N_GUARD::QAB1(A),XS(a)
      • Q(b);N_GUARD::S(B),XQ(b)
      • Q(b);N_GUARD::S(B)
      • S(a);N_GUARD::QAB1(A)
      • P(g);N_GUARD::S(B)
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