MESON Chess Problem Database

Problem Display
PID: 162721 (B1qr4/R1n2Q2/3k3N/1P1N4/1P1nrP2/1p6/4R3/3K2B1 w - - 0 1)

Thomas, Georg

Magasinet, 1939

(First published on Sun Nov 26 1939)

B1qr4/R1n2Q2/3k3N/1P1N4/1P1nrP2/1p6/4R3/3K2B1

#2

11 + 7

15601 Albrecht-Leiss-Degener Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Qe6
      • 2.Qxc7#
    • 1...Rxf4
      • 2.Qe7#
    • 1...Re5
      • 2.fxe5#
    • 1...Re7
      • 2.Qxe7#
    • 1...Sc2
      • 2.Bc5#
    • 1...Sxe2
      • 2.Bc5#
    • 1...Sf3
      • 2.Bc5#
    • 1...Sdxb5
      • 2.Bc5#
    • 1...Sf5
      • 2.Bc5#
    • 1...Sc6
      • 2.Bc5#
    • 1...Sde6
      • 2.Sf5#
      • 2.Qe7#
    • 1...Sxd5
      • 2.Qxd5#
    • 1...Sce6
      • 2.Qe7#
  • Tries
    • 1.Sf5+?
      • 1...Sxf5
        • 2.Bc5#
      • 1...Qxf5!
    • 1.Qxc7+?
      • 1...Ke6
        • 2.Rxe4#
        • 2.Qe7#
      • 1...Qxc7!
  • Keys
    • 1.Sb6!
      • threat
        • 2.Sc4#
      • 1...Sxe2
        • 2.Bc5#
      • 1...Sdxb5
        • 2.Bc5#
      • 1...Scxb5
        • 2.Qd5#
      • 1...Sxa8
        • 2.Qd5#
      • 1...Qe6
        • 2.Qxc7#
      • 1...Re7
        • 2.Qxe7#
      • 1...Sc2
        • 2.Bc5#
      • 1...Sf3
        • 2.Bc5#
      • 1...Sf5
        • 2.Bc5#
      • 1...Sc6
        • 2.Bc5#
      • 1...Sde6
        • 2.Sf5#
      • 1...Sd5
        • 2.Qxd5#
      • 1...Sa6
        • 2.Qd5#
      • 1...Sce6
        • 2.Qe7#
      • 1...Se8
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • Q(f);N_GUARD,SBLOCK::QAB1(J),XS(e)
    • R(c);N_GUARD,XP(E)::QAB1(J)
    • R(c);OGATE::P(E),XR(c)
    • R(c);N_GUARD::QAB1(J),XR(c)
    • S(b);OGATE::B(B)
    • S(b);OGATE,XR(C)::B(B)
    • S(b);OGATE,XP(F)::B(B)
    • S(e);OGATE,XS(G)::QAR1(J),XS(e)
    • S(e);S_CUTR(c)::QAB1(J)
  • Tries
    • Try
      • S(H);CHECK
      • Vars
        • S(b);OGATE,XS(H)::B(B)
      • Refutation
        • Q(f);XS(H)
    • Try
      • Q(J);CHECK,XS(e)
      • Refutation
        • Q(f);XQ(J)
  • Actual
    • S(G);
    • Threat
      • S(G)
    • Vars
      • S(b);OGATE,XR(C)::B(B)
      • S(b);OGATE,XP(F)::B(B)
      • S(e);N_GUARD,XP(F)::QAR1(J)
      • S(e);N_GUARD,XB(K)::QAR1(J)
      • Q(f);N_GUARD,SBLOCK::QAB1(J),XS(e)
      • R(c);N_GUARD::QAB1(J),XR(c)
      • S(b);OGATE::B(B)
      • S(b);N_GUARD,S_CUTQ(f)::S(H)
      • S(e);N_GUARD::QAR1(J),XS(e)
      • S(e);N_GUARD::QAR1(J)
      • S(e);S_CUTR(c)::QAB1(J)
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