MESON Chess Problem Database

Problem Display
PID: 76684 (Q1K5/B7/n7/N7/1P6/b1k5/1R6/1B6 w - - 0 1)

Butwillo, Brother

The Tablet, 1944

(First published on Sat Jan 22 1944)

Q1K5/B7/n7/N7/1P6/b1k5/1R6/1B6

#2

7 + 3

15239 Valois Notebooks 2016

SOLUTION

  • SOUND
  • Tries
    • 1.Rc2+?
      • 1...Kd3
        • 2.Qf3#
        • 2.Qd5#
      • 1...Kxb4!
    • 1.Qg2?
      • threat
        • 2.Rb3#
        • 2.Qc2#
        • 2.Qd2#
        • 2.Qg7#
      • 1...Sxb4
        • 2.Rb3#
        • 2.Qd2#
        • 2.Qg7#
      • 1...Sc5
        • 2.Qd2#
        • 2.Qg7#
      • 1...Bxb2!
    • 1.Qe4?
      • threat
        • 2.Bd4#
        • 2.Rc2#
        • 2.Qc2#
        • 2.Qd4#
        • 2.Qe5#
      • 1...Bxb2
        • 2.Qe1#
        • 2.Qd4#
      • 1...Sxb4
        • 2.Bd4#
        • 2.Qd4#
        • 2.Qe5#
      • 1...Sc5
        • 2.Rc2#
        • 2.Qe5#
      • 1...Kxb2!
    • 1.Qd5?
      • threat
        • 2.Bd4#
        • 2.Rb3#
        • 2.Qb3#
        • 2.Qd2#
        • 2.Qd4#
        • 2.Qe5#
      • 1...Bxb2
        • 2.Qd4#
      • 1...Sc5
        • 2.Qd2#
        • 2.Qe5#
      • 1...Kxb2!
    • 1.Qc6+?
      • 1...Sc5
        • 2.Qf6#
      • 1...Kxb2!
  • Keys
    • 1.Qh1!
      • threat
        • 2.Qc1#
        • 2.Qh8#
      • 1...Kxb2
        • 2.Bd4#
      • 1...Bxb2
        • 2.Qe1#
      • 1...Sxb4
        • 2.Qh8#
      • 1...Sc5
        • 2.Qh8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);CHECK
      • Refutation
        • K(b);S_FLIGHT,XP(C)
    • Try
      • Q(F);
      • Threat
        • DUALS(4)
      • Refutation
        • B(a);XR(B)
    • Try
      • Q(F);
      • Threat
        • DUALS(5)
      • Refutation
        • K(b);S_FLIGHT,XR(B)
    • Try
      • Q(F);
      • Threat
        • DUALS(6)
      • Vars
        • B(a);SBLOCK,XR(B)::QAB1(F)
      • Refutation
        • K(b);S_FLIGHT,XR(B)
    • Try
      • Q(F);CHECK
      • Vars
        • S(c);P_SPINS(c)::QAB(F)
      • Refutation
        • K(b);S_FLIGHT,XR(B)
  • Actual
    • Q(F);
    • Threat
      • DUALS(2)
    • Vars
      • K(b);S_FLIGHT,XR(B)::B(E)
      • B(a);SBLOCK,XR(B)::QAB(F)
      • S(c);XP(C)::QAB(F)
      • S(c);::QAB(F)
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