MESON Chess Problem Database

Problem Display
PID: 204294 (B4B1K/8/3P4/N3kPPn/p5P1/1bP1P1N1/r2q4/3RQ3 w - - 0 1)

Henke, Walter

5th HM., Arbeiter Schachzeitung, 1925

B4B1K/8/3P4/N3kPPn/p5P1/1bP1P1N1/r2q4/3RQ3

#2

13 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qc1
      • 2.Sc6#
    • 1...Qxe1
      • 2.Sc6#
    • 1...Qxc3
      • 2.Qxc3#
    • 1...Qxe3
      • 2.Qxe3#
    • 1...Qb2
      • 2.Sc6#
    • 1...Qc2
      • 2.Sc6#
    • 1...Qe2
      • 2.Sc6#
    • 1...Qf2
      • 2.Sc6#
    • 1...Qh2
      • 2.Sc6#
    • 1...Qd4
      • 2.cxd4#
    • 1...Qxd6
      • 2.Bxd6#
    • 1...Bxd1
      • 2.Sc4#
    • 1...Bc2
      • 2.Sc4#
    • 1...Bc4
      • 2.Sxc4#
    • 1...Sxg3
      • 2.Qxg3#
  • Tries
    • 1.Rxd2?
      • threat
        • 2.Sc6#
      • 1...Sxg3
        • 2.Bg7#
        • 2.Qxg3#
      • 1...Bd5
        • 2.Rxd5#
      • 1...Rxd2!
    • 1.Qxd2?
      • threat
        • 2.Sc6#
        • 2.Qd4#
      • 1...Sxg3
        • 2.Bg7#
        • 2.Qd4#
      • 1...Bd5
        • 2.Qd4#
        • 2.Qxd5#
      • 1...Rxd2!
  • Keys
    • 1.c4!
      • threat
        • 2.Sc6#
      • 1...Qxe3
        • 2.Qxe3#
      • 1...Qxa5
        • 2.Qxa5#
      • 1...Qxd6
        • 2.Bxd6#
      • 1...Bxc4
        • 2.Sxc4#
      • 1...Sxg3
        • 2.Qxg3#
      • 1...Qd5
        • 2.Rxd5#
      • 1...Qg2
        • 2.Qc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 11
  • Sets
    • Q(b);::S(G)
    • Q(b);XQ(B)::S(G)
    • Q(b);OGATE,XP(C)::QAB(B),XQ(b)
    • Q(b);OGATE,P_SPINQ(b),XP(D)::QAR2(B),XQ(b)
    • Q(b);OGATE::P(C),XQ(b)
    • Q(b);OGATE,XP(J)::B(L),XQ(b)
    • B(c);N_GUARD,XR(A)::S(G)
    • B(c);N_GUARD::S(G)
    • B(c);N_GUARD::S(G),XB(c)
    • S(f);OGATE,XS(E)::QAB(B),XS(f)
  • Tries
    • Try
      • R(A);XQ(b)
      • Threat
        • S(G)
      • Vars
        • B(c);N_GUARD::R1(A),XB(c)
      • Refutation
        • R(a);XR(A)
    • Try
      • Q(B);XQ(b)
      • Threat
        • DUALS(2)
      • Refutation
        • R(a);XQ(B)
  • Actual
    • P(C);
    • Threat
      • S(G)
    • Vars
      • Q(b);OGATE,P_SPINQ(b),XP(D)::QAR2(B),XQ(b)
      • Q(b);OGATE,XS(G)::QAR(B),XQ(b)
      • Q(b);OGATE,XP(J)::B(L),XQ(b)
      • B(c);XP(C)::S(G),XB(c)
      • S(f);OGATE,XS(E)::QAB(B),XS(f)
      • Q(b);OGATE::R1(A),XQ(b)
      • Q(b);OGATE::QAB(B)
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