MESON Chess Problem Database

Problem Display
PID: 275355 (1B6/Q7/3n4/4r3/5k2/2N1N1bR/4B1K1/3R4 w - - 0 1)

Boros, Sandor

Western Morning News, 1926

(First published on Sat Feb 13 1926)

1B6/Q7/3n4/4r3/5k2/2N1N1bR/4B1K1/3R4

#2

8 + 4

15239 Valois Notebooks 2024

SOLUTION

  • SOUND
  • Sets
    • 1...Rg5
      • 2.Qd4#
  • Tries
    • 1.Scd5+?
      • 1...Ke4
        • 2.Bd3#
        • 2.Bf3#
        • 2.Rd4#
        • 2.Qd4#
      • 1...Kg5
        • 2.Qg7#
      • 1...Rxd5!
    • 1.Rf1+?
      • 1...Kg5
        • 2.Qg7#
      • 1...Bf2!
  • Keys
    • 1.Qg7!
      • threat
        • 2.Qxg3#
      • 1...Kxe3
        • 2.Qxg3#
      • 1...Rxe3
        • 2.Qf6#
      • 1...Rg5
        • 2.Qd4#
      • 1...Be1
        • 2.Rf3#
        • 2.Qg4#
      • 1...Bf2
        • 2.Rf3#
        • 2.Qg4#
      • 1...Bh2
        • 2.Rf1#
        • 2.Rf3#
        • 2.Qg4#
      • 1...Bh4
        • 2.Rf3#
        • 2.Qg4#
      • 1...Se4
        • 2.Scd5#
      • 1...Sf5
        • 2.Sed5#

There are these versions: 275356

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • R(c);N_GUARD,P_SPINS(d),SBLOCK::QAR2(G)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(b);N_GUARD,S_CUTR(c),S_FLIGHT::QAR2(G)
      • Refutation
        • R(c);P_SPINS(d),XS(D)
    • Try
      • R(A);CHECK
      • Vars
        • K(b);N_GUARD,S_CUTB(a),S_FLIGHT::QAR2(G)
      • Refutation
        • B(a);P_SPINB(a)
  • Actual
    • Q(G);
    • Threat
      • QAB1(G),XB(a)
    • Vars
      • K(b);P_SPINB(a),S_FLIGHT,XS(E)::QAR2(G),XB(a)
      • R(c);N_GUARD,P_SPINS(d),SBLOCK,XS(E)::QAR2(G)
      • R(c);OGATE,P_SPINS(d),SBLOCK::QAR2(G)
      • S(d);P_SPINR(c),SBLOCK::S(D)
      • S(d);P_SPINR(c),SBLOCK::S(E)
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