MESON Chess Problem Database

Problem Display
PID: 165381 (3R1QB1/1n6/1n4P1/4k1Nr/bK3p2/2P1qP2/7b/4R3 w - - 0 1)

Zepler, Erich Ernest

Skakbladet, 1915

3R1QB1/1n6/1n4P1/4k1Nr/bK3p2/2P1qP2/7b/4R3

#2

9 + 8

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Qe2
      • 2.Rxe2#
    • 1...Qe4+
      • 2.Rxe4#
    • 1...Bd1
      • 2.Re8#
    • 1...Bc2
      • 2.Re8#
    • 1...Be8
      • 2.Rxe8#
    • 1...Sc4
      • 2.Rd5#
    • 1...Sd5+
      • 2.Rxd5#
    • 1...Sd7
      • 2.Re8#
    • 1...Sa8
      • 2.Rd5#
    • 1...Sc8
      • 2.Rd5#
  • Tries
    • 1.Sh7?
      • threat
        • 2.Qf6#
      • 1...Qe4+
        • 2.Rxe4#
      • 1...Sd5+
        • 2.Rxd5#
      • 1...Rf5
        • 2.Qe7#
      • 1...Sd7
        • 2.Re8#
      • 1...Rxh7!
    • 1.Rd6?
      • threat
        • 2.Qf6#
      • 1...Qe4+
        • 2.Rxe4#
      • 1...Sd5+
        • 2.Rxd5#
      • 1...Sd7
        • 2.Rd5#
      • 1...Sxd6!
  • Keys
    • 1.Se4!
      • threat
        • 2.Qf6#
      • 1...Qd4+
        • 2.cxd4#
      • 1...Qc5+
        • 2.Sxc5#
      • 1...Qxc3+
        • 2.Sxc3#
      • 1...Qxe4+
        • 2.Rxe4#
      • 1...Sd5+
        • 2.Rxd5#
      • 1...Rf5
        • 2.Qe7#
      • 1...Sd7
        • 2.Re8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 7
  • Sets
    • Q(b);OGATEB::R(A),XQ(b)
    • Q(b);CHECK,OGATE::R1(A),XQ(b)
    • B(c);N_GUARD::R(G)
    • B(c);N_GUARD::R(G),XB(c)
    • S(g);N_GUARD::R1(G)
    • S(g);CHECK,N_GUARD::R1(G),XS(g)
    • S(g);S_CUTB(c)::R(G)
  • Tries
    • Try
      • S(E);
      • Threat
        • QAB1(H)
      • Vars
        • Q(b);CHECK,OGATE::R1(A),XQ(b)
        • S(g);CHECK,N_GUARD::R1(G),XS(g)
        • R(f);SBLOCK::QAR2(H)
        • S(g);S_CUTB(c)::R(G)
      • Refutation
        • R(f);XS(E)
    • Try
      • R(G);
      • Threat
        • QAB1(H)
      • Vars
        • Q(b);CHECK,OGATE::R1(A),XQ(b)
        • S(g);CHECK,N_GUARD::R1(G),XS(g)
        • S(g);N_GUARD::R1(G)
      • Refutation
        • S(h);XR(G)
  • Actual
    • S(E);N_PINQ(b)
    • Threat
      • QAB1(H)
    • Vars
      • Q(b);CHECK,OGATE::P(B),XQ(b)
      • Q(b);CHECK::R(A)+S(E),XQ(b)
      • Q(b);CHECK,XP(B)::R(A)+S(E),XQ(b)
      • Q(b);CHECK,OGATE,P_SPINQ(b),XS(E)::R1(A),XQ(b)
      • S(g);CHECK,N_GUARD::R1(G),XS(g)
      • R(f);SBLOCK::QAR2(H)
      • S(g);S_CUTB(c)::R(G)
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Developed and maintained by Brian Stephenson.
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