MESON Chess Problem Database

Problem Display
PID: 169626 (8/BP6/6R1/1p1p1B2/PpqP3Q/1pkP1N2/1N2pP1P/2KR4 w - - 0 1)

Zaiser, Reinhard

Heilbronner Stimme, 1988

8/BP6/6R1/1p1p1B2/PpqP3Q/1pkP1N2/1N2pP1P/2KR4

#2

14 + 7

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd3
      • 2.Rxd3#
    • 1...Qxd4
      • 2.Bxd4#
      • 2.Qxd4#
    • 1...Qc6
      • 2.Rxc6#
    • 1...Qc8
      • 2.bxc8Q#
      • 2.bxc8R#
    • 1...exd1Q+
      • 2.Sxd1#
    • 1...exd1S
      • 2.Sxd1#
    • 1...exd1B
      • 2.Sxd1#
    • 1...exd1R+
      • 2.Sxd1#
    • 1...bxa4
      • 2.Sxa4#
  • Tries
    • 1.Sd2?
      • threat
        • 2.Sb1#
      • 1...exd1Q+
        • 2.Sxd1#
      • 1...exd1R+
        • 2.Sxd1#
      • 1...Qxd3!
    • 1.axb5?
      • threat
        • 2.Sa4#
      • 1...exd1Q+
        • 2.Sxd1#
      • 1...exd1R+
        • 2.Sxd1#
      • 1...Qxd3
        • 2.Rxd3#
      • 1...Qxb5!
  • Keys
    • 1.Qe7!
      • 1...exd1Q+
        • 2.Sxd1#
      • 1...exd1R+
        • 2.Sxd1#
      • 1...Qxd3
        • 2.Rxd3#
      • 1...Qxd4
        • 2.Bxd4#
      • 1...exd1S
        • 2.Sxd1#
        • 2.Qe1#
      • 1...exd1B
        • 2.Sxd1#
        • 2.Qe1#
      • 1...bxa4
        • 2.Sxa4#
      • 1...e1Q
        • 2.Qxe1#
      • 1...e1S
        • 2.Qxe1#
      • 1...e1B
        • 2.Qxe1#
      • 1...e1R
        • 2.Qxe1#
      • 1...Qc5
        • 2.Qxc5#
      • 1...Qc6
        • 2.Rxc6#
      • 1...Qc7
        • 2.Qxc7#
      • 1...Qc8
        • 2.bxc8Q#
        • 2.bxc8R#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 2
  • Sets
    • Q(e);OGATE,XP(F)::R1(B),XQ(e)
    • Q(e);OGATEB::R(L),XQ(e)
    • Q(e);OGATE::PXQ(e)=Q
    • P(a);CHECK,XR(B)::S(C),XQ(a)
    • P(a);XR(B)::S(C),XS(a)
    • P(a);XR(B)::S(C),XB(a)
    • P(a);CHECK,XR(B)::S(C),XR(a)
    • P(f);XP(H)::S(C),XP(f)
  • Tries
    • Try
      • S(G);
      • Threat
        • S(G)
      • Vars
        • P(a);CHECK,XR(B)::S(C),XQ(a)
        • P(a);CHECK,XR(B)::S(C),XR(a)
      • Refutation
        • Q(e);XP(F)
    • Try
      • P(H);XP(f)
      • Threat
        • S(C)
      • Vars
        • P(a);CHECK,XR(B)::S(C),XQ(a)
        • P(a);CHECK,XR(B)::S(C),XR(a)
        • Q(e);OGATE,XP(F)::R1(B),XQ(e)
      • Refutation
        • Q(e);XP(H)
  • Actual
    • Q(J);
    • Vars
      • P(a);CHECK,XR(B)::S(C),XQ(a)
      • P(a);CHECK,XR(B)::S(C),XR(a)
      • Q(e);OGATE,XP(F)::R1(B),XQ(e)
      • Q(e);OGATE,XP(I)::B(M),XQ(e)
      • P(f);XP(H)::S(C),XP(f)
      • P(a);OGATE,P_PINR(B)::QAB(J),XQ(a)
      • P(a);OGATE::QAB(J),XS(a)
      • P(a);OGATE::QAB(J),XB(a)
      • P(a);OGATE,P_PINR(B)::QAB(J),XR(a)
      • Q(e);OGATEB::QAR2(J),XQ(e)
      • Q(e);OGATEB::R(L),XQ(e)
      • Q(e);OGATEB::QAR(J),XQ(e)
      • Q(e);OGATE::PXQ(e)=Q
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