MESON Chess Problem Database

Problem Display
PID: 261593 (n7/1p3K2/pn2N2P/3kP1p1/2R3N1/7p/Q2P4/5b2 w - - 0 1)

Esslinger, Fritz

Neue Zurcher Zeitung, 1909

n7/1p3K2/pn2N2P/3kP1p1/2R3N1/7p/Q2P4/5b2

#2

8 + 8

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Sc7
      • 2.Sxc7#
  • Tries
    • 1.Qxa6?
      • threat
        • 2.Qb5#
      • 1...Bxc4
        • 2.Qxb7#
      • 1...Sxc4
        • 2.Qxb7#
      • 1...Sa4
        • 2.Rd4#
      • 1...Sd7
        • 2.Rd4#
      • 1...Sc7
        • 2.Sxc7#
      • 1...bxa6!
    • 1.d3?
      • threat
        • 2.Rc5#
        • 2.Qa5#
      • 1...Sxc4
        • 2.Qxc4#
      • 1...Sa4
        • 2.Rc1#
        • 2.Rc2#
        • 2.Rc3#
        • 2.Rc5#
        • 2.Rc7#
        • 2.Rc8#
      • 1...Sd7
        • 2.Rc1#
        • 2.Rc2#
        • 2.Rc3#
        • 2.Rc5#
        • 2.Rc7#
        • 2.Rc8#
      • 1...Sc8
        • 2.Rc1#
        • 2.Rc2#
        • 2.Rc3#
        • 2.Rc5#
        • 2.Rc7#
        • 2.Rxc8#
      • 1...Sc7
        • 2.Sxc7#
        • 2.Rc5#
      • 1...a5
        • 2.Rc5#
        • 2.Qxa5#
      • 1...Bxd3!
  • Keys
    • 1.Qb1!
      • threat
        • 2.Rc5#
        • 2.Qe4#
      • 1...Kxc4
        • 2.Se3#
      • 1...Bxc4
        • 2.Qh1#
      • 1...Sxc4
        • 2.Qxb7#
      • 1...Bg2
        • 2.Rc5#
        • 2.Qd3#
      • 1...Bd3
        • 2.Qxd3#
      • 1...Sa4
        • 2.Qe4#
      • 1...Sd7
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • S(h);N_GUARD::S(F),XS(h)
  • Tries
    • Try
      • Q(A);XP(e)
      • Threat
        • QAR2(A)
      • Vars
        • B(a);SBLOCK,XR(C)::QAB(A),XP(g)
        • S(f);SBLOCK,XR(C)::QAB(A),XP(g)
        • S(f);::R1(C)
        • S(h);N_GUARD::S(F),XS(h)
      • Refutation
        • P(g);XQ(A)
    • Try
      • P(B);
      • Threat
        • DUALS(2)
      • Vars
        • S(f);OGATE,P_SPINS(f),XR(C)::QAB1(A),XS(f)
      • Refutation
        • B(a);XP(B)
  • Actual
    • Q(A);
    • Threat
      • DUALS(2)
    • Vars
      • K(c);N_GUARD,S_FLIGHT,XR(C)::S(D)
      • B(a);OGATE,SBLOCK,XR(C)::QAB(A)
      • S(f);OGATE,SBLOCK,XR(C)::QAB(A),XP(g)
      • B(a);N_GUARD::QAR2(A),XB(a)
      • S(f);::QAB1(A)
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