MESON Chess Problem Database

Problem Display
PID: 140802 (2N1nr1b/1K2Rr2/1RN4p/p1pk4/3p4/3P2Q1/6b1/8 w - - 0 1)

Letzen, Greta

Svenska Dagbladet, 1923

2N1nr1b/1K2Rr2/1RN4p/p1pk4/3p4/3P2Q1/6b1/8

#2

7 + 10

114 Springaren 2010
5454 Near Snap 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rf6
      • 2.Re5#
      • 2.Qe5#
    • 1...Rxe7+
      • 2.S6xe7#
    • 1...Rg7
      • 2.Qe5#
    • 1...Be5
      • 2.Qxe5#
    • 1...Bf6
      • 2.Qxg2#
    • 1...Sd6+
      • 2.Qxd6#
    • 1...Sf6
      • 2.Qe5#
      • 2.Qd6#
    • 1...Sc7
      • 2.Qd6#
    • 1...Sg7
      • 2.Qe5#
      • 2.Qd6#
    • 1...c4
      • 2.Rb5#
  • Tries
    • 1.Sb4+?
      • 1...cxb4
        • 2.Rb5#
      • 1...axb4!
    • 1.Ra6?
      • threat
        • 2.Sb6#
      • 1...Rxe7+
        • 2.S6xe7#
      • 1...Sd6+
        • 2.Qxd6#
      • 1...c4
        • 2.Rxa5#
      • 1...Be5
        • 2.Qxe5#
      • 1...Rf4!
  • Keys
    • 1.Qg6!
      • threat
        • 2.Qe6#
      • 1...Rxe7+
        • 2.S8xe7#
      • 1...Sd6+
        • 2.Qxd6#
      • 1...c4
        • 2.Rb5#
      • 1...Rf6
        • 2.Re5#
      • 1...Bh3
        • 2.Qe4#
      • 1...Bf6
        • 2.Qxg2#
      • 1...Sf6
        • 2.Qf5#
      • 1...Sc7
        • 2.Qd6#
      • 1...Sg7
        • 2.Qd6#

Anticipated by 198836(1921)

This is after

After Einar Letzen.

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • R(g);CHECK,XR(F)::S(D),XR(g)
    • R(g);S_CUTB(j)::QAR1(B)
    • B(j);N_GUARD::QAR1(B),XB(j)
    • B(j);S_CUTR(g)::QAB(B),XB(a)
    • S(h);CHECK,N_GUARD::QAR1(B),XS(h)
    • S(h);N_GUARD,N_PINR(F)::QAR1(B)
    • P(d);OGATEB::R(C)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • P(d);S_CUTP(c),XS(D)::R(C)
      • Refutation
        • P(c);XS(D)
    • Try
      • R(C);
      • Threat
        • S(G)
      • Vars
        • R(g);CHECK,XR(F)::S(D),XR(g)
        • S(h);CHECK,N_GUARD::QAR1(B),XS(h)
        • P(d);OGATEB::R(C),XP(c)
        • B(j);N_GUARD::QAR1(B),XB(j)
      • Refutation
        • R(g);N_PINR(F)
  • Actual
    • Q(B);
    • Threat
      • QAB1(B)
    • Vars
      • R(g);CHECK,XR(F)::S(G),XR(g)
      • S(h);CHECK,N_GUARD::QAR1(B),XS(h)
      • P(d);OGATEB::R(C)
      • R(g);N_PINR(F)::R1(F)
      • B(a);N_GUARD::QAB1(B)
      • B(j);S_CUTR(g)::QAB(B),XB(a)
      • S(h);S_CUTB(j),S_CUTR(g)::QAR2(B)
      • S(h);N_GUARD,N_PINR(F)::QAR1(B)
      • S(h);N_GUARD::QAR1(B)
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