MESON Chess Problem Database

Problem Display
PID: 210566 (8/5Q2/1R6/1K2k2n/1n6/8/3N4/8 w - - 0 1)

Tuchsen, Joh

Deutsche Schachblatter, 1940

8/5Q2/1R6/1K2k2n/1n6/8/3N4/8

#2

4 + 3

15148 Sadier Collection 2020
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Kc4?
      • threat
        • 2.Re6#
      • 1...Sf6
        • 2.Qxf6#
      • 1...Sf4
        • 2.Qf6#
      • 1...Sg7
        • 2.Qf6#
      • 1...Sc6!
    • 1.Re6+?
      • 1...Kd5
        • 2.Qd7#
      • 1...Kd4!
    • 1.Qf6+?
      • 1...Kd5
        • 2.Rd6#
        • 2.Qd6#
      • 1...Sxf6!
  • Keys
    • 1.Rd6!
      • 1...Kxd6
        • 2.Sc4#
      • 1...Sd5
        • 2.Rxd5#
      • 1...Sf6
        • 2.Qxf6#
      • 1...Sa2
        • 2.Rd5#
      • 1...Sc2
        • 2.Rd5#
      • 1...Sd3
        • 2.Rd5#
      • 1...Sa6
        • 2.Rd5#
      • 1...Sc6
        • 2.Rd5#
      • 1...Sg3
        • 2.Qf6#
      • 1...Sf4
        • 2.Qf6#
      • 1...Sg7
        • 2.Qf6#

Anticipated by 227492(1926)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Threat
        • R1(C)
      • Vars
        • S(c);N_GUARD::QAB1(D),XS(c)
        • S(c);N_GUARD::QAB1(D)
      • Refutation
        • S(a);
    • Try
      • R(C);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR2(D)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(D);CHECK
      • Refutation
        • S(c);XQ(D)
  • Actual
    • R(C);
    • Vars
      • K(b);S_FLIGHT,XR(C)::S(A)
      • S(a);N_GUARD::R1(C),XS(a)
      • S(c);N_GUARD::QAB1(D),XS(c)
      • S(a);N_GUARD::R1(C)
      • S(c);N_GUARD::QAB1(D)
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