MESON Chess Problem Database

Problem Display
PID: 222837 (8/4R3/4b3/1Q1NkN2/4p3/4p3/8/4K3 w - - 0 1)

Votruba, Anna

Wiener Hausfrauen-Zeitung, 1884

8/4R3/4b3/1Q1NkN2/4p3/4p3/8/4K3

#2

5 + 4

6490 yacpdb 2020
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Sfxe3?
      • 1...Kd6
        • 2.Sc4#
      • 1...Kd4!
    • 1.Qf1?
      • 1...Kxd5
        • 2.Qb5#
      • 1...e2!
    • 1.Qa6?
      • threat
        • 2.Qxe6#
      • 1...Kxd5
        • 2.Qb5#
      • 1...Kxf5!
    • 1.Qe8?
      • 1...Kxd5
        • 2.Qb5#
      • 1...Kxf5
        • 2.Qh5#
      • 1...e2!
    • 1.Qb2+?
      • 1...Kxd5
        • 2.Qb5#
      • 1...Kxf5!
    • 1.Qb6?
      • threat
        • 2.Qxe6#
      • 1...Kxd5
        • 2.Qb5#
      • 1...Kxf5!
    • 1.Qb8+?
      • 1...Kxd5
        • 2.Qb5#
      • 1...Kxf5!
  • Keys
    • 1.Qe2!
      • 1...Kxd5
        • 2.Qb5#
      • 1...Kxf5
        • 2.Qh5#

Anticipated by 32639(0000), 206996(1859), 23002(1881)

This anticipates 193956(1916), 21141(1917), 71194(1917), 76800(1945), 142699(1954), 105209(1958), 138156(1962), 217452(1992)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);XP(a)
      • Vars
        • K(c);N_SPINB(d),S_FLIGHT::S(D)
      • Refutation
        • K(c);N_SPINB(d),S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(c);N_SPINB(d),OGATEB,P-FLIGHT,XS(C)::QAR2(B)
      • Refutation
        • P(a);
    • Try
      • Q(B);
      • Threat
        • QAR1(B),XB(d)
      • Vars
        • K(c);N_SPINB(d),OGATEB,P-FLIGHT,XS(C)::QAR2(B)
      • Refutation
        • K(c);N_SPINB(d),P-FLIGHT,XS(D)
    • Try
      • Q(B);
      • Vars
        • K(c);N_SPINB(d),OGATEB,P-FLIGHT,XS(C)::QAR2(B)
        • K(c);N_SPINB(d),OGATEB,P-FLIGHT,XS(D)::QAR2(B)
      • Refutation
        • P(a);
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);N_SPINB(d),OGATEB,P-FLIGHT,XS(C)::QAR2(B)
      • Refutation
        • K(c);N_SPINB(d),P-FLIGHT,XS(D)
    • Try
      • Q(B);
      • Threat
        • QAR1(B),XB(d)
      • Vars
        • K(c);N_SPINB(d),OGATEB,P-FLIGHT,XS(C)::QAR2(B)
      • Refutation
        • K(c);N_SPINB(d),P-FLIGHT,XS(D)
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);N_SPINB(d),OGATEB,P-FLIGHT,XS(C)::QAR2(B)
      • Refutation
        • K(c);N_SPINB(d),P-FLIGHT,XS(D)
  • Actual
    • Q(B);
    • Vars
      • K(c);N_SPINB(d),OGATEB,P-FLIGHT,XS(C)::QAR2(B)
      • K(c);N_SPINB(d),OGATEB,P-FLIGHT,XS(D)::QAR2(B)
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