MESON Chess Problem Database

Problem Display
PID: 22054 (8/8/1B3p2/8/8/n6K/8/Qb5k w - - 0 1)

Guidelli, Giorgio

L'Alfiere di Re, 1924

8/8/1B3p2/8/8/n6K/8/Qb5k

#2

3 + 4

5501 Chess Cameos 1936
78 Bulletin Ouvrier des Echecs 1953
2012 Miniature Chess Problems from Many Countries 1981
2786 More Fun with Chess Miniatures 2000
5454 Near Snap 2007
3713 Snap 2008
133 The Problemist Supplement 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Sc2
      • 2.Qa8#
    • 1...Sc4
      • 2.Qxb1#
    • 1...Sb5
      • 2.Qxb1#
  • Tries
    • 1.Bf2?
      • 1...Sc2
        • 2.Qa8#
      • 1...Sc4
        • 2.Qxb1#
      • 1...Sb5
        • 2.Qxb1#
      • 1...f5!
    • 1.Be3?
      • 1...Sc2
        • 2.Qa8#
      • 1...Sc4
        • 2.Qxb1#
      • 1...Sb5
        • 2.Qxb1#
      • 1...f5!
    • 1.Bd4?
      • 1...Sc2
        • 2.Qa8#
      • 1...Sc4
        • 2.Qxb1#
      • 1...Sb5
        • 2.Qxb1#
      • 1...f5!
    • 1.Bc5?
      • 1...Sc2
        • 2.Qa8#
      • 1...Sc4
        • 2.Qxb1#
      • 1...Sb5
        • 2.Qxb1#
      • 1...f5!
    • 1.Qd4?
      • threat
        • 2.Qg1#
        • 2.Qd1#
      • 1...Bc2
        • 2.Qg1#
      • 1...Bd3
        • 2.Qg1#
      • 1...Sc2
        • 2.Qg1#
        • 2.Qe4#
        • 2.Qd5#
      • 1...Bf5+!
    • 1.Qxf6?
      • threat
        • 2.Qf1#
        • 2.Qf3#
      • 1...Bd3
        • 2.Qf3#
      • 1...Be4
        • 2.Qf1#
      • 1...Bf5+!
  • Keys
    • 1.Kg3!
      • 1...Sc2
        • 2.Qa8#
      • 1...Sc4
        • 2.Qxb1#
      • 1...Sb5
        • 2.Qxb1#
      • 1...f5
        • 2.Qh8#

Anticipated by 22047(1923)

This anticipates 81448(1929), 71670(1931), 79539(1947), 150450(1948)

There are these versions: 147813, 203312

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(c);OGATE::QAB(A)
    • S(c);N_GUARD::QAR(A),XB(a)
  • Tries
    • Try
      • B(C);
      • Vars
        • S(c);OGATE::QAB(A)
        • S(c);N_GUARD::QAR(A),XB(a)
      • Refutation
        • P(d);
    • Try
      • B(C);
      • Vars
        • S(c);OGATE::QAB(A)
        • S(c);N_GUARD::QAR(A),XB(a)
      • Refutation
        • P(d);
    • Try
      • B(C);
      • Vars
        • S(c);OGATE::QAB(A)
        • S(c);N_GUARD::QAR(A),XB(a)
      • Refutation
        • P(d);
    • Try
      • B(C);
      • Vars
        • S(c);OGATE::QAB(A)
        • S(c);N_GUARD::QAR(A),XB(a)
      • Refutation
        • P(d);
    • Try
      • Q(A);N_PINB(a)
      • Threat
        • DUALS(2)
      • Vars
        • B(a);::QAR1(A)
      • Refutation
        • B(a);CHECK
    • Try
      • Q(A);N_PINB(a),XP(d)
      • Threat
        • DUALS(2)
      • Vars
        • B(a);::QAB(A)
        • B(a);::QAR2(A)
      • Refutation
        • B(a);CHECK
  • Actual
    • K(B);P-FLIGHT
    • Vars
      • S(c);OGATE::QAB(A)
      • S(c);N_GUARD::QAR(A),XB(a)
      • P(d);OGATE::QAB(A)
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