MESON Chess Problem Database

Problem Display
PID: 229255 (1qR5/2n1p1QK/N3P2n/4R3/3k4/Nr1p1P2/1Pb5/5B2 w - - 0 1)

Bagi, Sandor

Nepszava, 1926

1qR5/2n1p1QK/N3P2n/4R3/3k4/Nr1p1P2/1Pb5/5B2

#2

10 + 8

6490 yacpdb 2020
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sb5
      • 2.Rc4#
    • 1...Sd5
      • 2.Re4#
      • 2.Rc4#
    • 1...Sxa6
      • 2.Rc4#
    • 1...Sxe6
      • 2.Rc4#
    • 1...Sa8
      • 2.Rc4#
    • 1...Se8
      • 2.Rc4#
    • 1...d2+
      • 2.Sxc2#
  • Tries
    • 1.Sxc2+?
      • 1...Kc4
        • 2.Rc5#
      • 1...dxc2!
    • 1.Rd8+?
      • 1...Sd5
        • 2.Re4#
        • 2.Rdxd5#
      • 1...Qxd8!
    • 1.Qg5?
      • threat
        • 2.Re4#
        • 2.Qe3#
        • 2.Qf4#
      • 1...d2+
        • 2.Sxc2#
      • 1...Rxa3
        • 2.Re4#
        • 2.Qf4#
      • 1...Sxe6
        • 2.Re4#
        • 2.Rd5#
        • 2.Rc4#
        • 2.Qe3#
      • 1...Sf5
        • 2.Qf4#
      • 1...Qb7
        • 2.Qe3#
      • 1...Qa8
        • 2.Qe3#
      • 1...Sg4
        • 2.Re4#
        • 2.Qf4#
      • 1...Sd5
        • 2.Re4#
        • 2.Rxd5#
        • 2.Rc4#
      • 1...Rxb2!
  • Keys
    • 1.Sc4!
      • threat
        • 2.Rc5#
      • 1...d2+
        • 2.Rf5#
      • 1...Kxc4
        • 2.Rc5#
      • 1...Sxa6
        • 2.Qg1#
      • 1...Sxe6
        • 2.Qg1#
      • 1...Sg4
        • 2.Qxg4#
      • 1...Sf5
        • 2.Qg4#
      • 1...Sf7
        • 2.Qg4#
      • 1...Sg8
        • 2.Qg4#
      • 1...Sb5
        • 2.Qg1#
      • 1...Sd5
        • 2.Re4#
      • 1...Sa8
        • 2.Qg1#
      • 1...Se8
        • 2.Qg1#

This anticipates 197450(1944)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 6
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • S(f);OGATE::R1(J)
    • S(f);OGATE,XS(F)::R1(J)
    • S(f);OGATE,XP(G)::R1(J)
    • P(c);CHECK,N_GUARD::S(C),XB(a)
  • Tries
    • Try
      • S(C);CHECK,XB(a)
      • Vars
        • K(d);P-FLIGHT,P_SPINP(c),P_SPINS(f)::R1(E)
      • Refutation
        • P(c);XS(C)
    • Try
      • R(J);CHECK
      • Refutation
        • Q(h);XR(J)
    • Try
      • Q(H);
      • Threat
        • DUALS(3)
      • Vars
        • P(c);CHECK,N_GUARD::S(C),XB(a)
        • S(e);::QAR2(H)
        • Q(h);::QAB1(H)
      • Refutation
        • R(b);XP(B)
  • Actual
    • S(C);
    • Threat
      • QAB(H)+R(E)
    • Vars
      • P(c);CHECK::QAB(H)+R(E)
      • K(d);P-FLIGHT,P_SPINP(c),P_SPINS(f),XS(C)::R1(E)
      • S(f);XS(F)::QAB(H)
      • S(f);XP(G)::QAB(H)
      • S(e);N_GUARD::QAR(H),XS(e)
      • S(e);N_GUARD::QAR(H)
      • S(f);::QAB(H)
      • S(f);SBLOCK::QAB(H)+R(E),DCHECK
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