MESON Chess Problem Database

Problem Display
PID: 203478 (8/8/pPR1pr2/PkpB4/p1n1Q3/R1B2P2/3nK3/8 w - - 0 1)

Boros, Sandor

Nepszava, 1924

8/8/pPR1pr2/PkpB4/p1n1Q3/R1B2P2/3nK3/8

#2

9 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sb1
      • 2.Bxc4#
      • 2.Qxc4#
    • 1...Sf1
      • 2.Bxc4#
      • 2.Qxc4#
    • 1...Sb3
      • 2.Bxc4#
      • 2.Qxc4#
    • 1...Sxf3
      • 2.Bxc4#
      • 2.Qxc4#
    • 1...Se3
      • 2.Qxa4#
    • 1...Sxa5
      • 2.Qxa4#
    • 1...Se5
      • 2.Qxa4#
    • 1...Sxb6
      • 2.Rxb6#
    • 1...Sd6
      • 2.Qxa4#
  • Tries
    • 1.Rb3+?
      • 1...Sxb3
        • 2.Bxc4#
        • 2.Qxc4#
      • 1...axb3!
    • 1.Rxe6?
      • threat
        • 2.Bc6#
      • 1...Sxa5
        • 2.Qxa4#
      • 1...Se5
        • 2.Qxa4#
      • 1...Rxe6!
    • 1.Qd4?
      • threat
        • 2.Rxc5#
        • 2.Qxc5#
      • 1...Sxa5
        • 2.Qxc5#
        • 2.Qxa4#
      • 1...Sb3
        • 2.Qxc4#
      • 1...Se4
        • 2.Qxc4#
      • 1...cxd4!
  • Keys
    • 1.Rd6!
      • threat
        • 2.Bc6#
      • 1...Sxa5
        • 2.Qxa4#
      • 1...exd5
        • 2.Qe8#
      • 1...Se5
        • 2.Qxa4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • S(c);OGATE::QAB1(E),XP(b)
    • S(c);OGATE,XP(F)::QAB1(E),XP(b)
    • S(c);OGATE,XP(H)::R1(I),XS(c)
  • Tries
    • Try
      • R(B);CHECK
      • Refutation
        • P(b);XR(B)
    • Try
      • R(I);XP(g)
      • Threat
        • B(G)
      • Vars
        • S(c);OGATE,XP(F)::QAB1(E),XP(b)
        • S(c);OGATE::QAB1(E),XP(b)
      • Refutation
        • R(h);P_PINQ(E),XR(I)
    • Try
      • Q(E);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);N_GUARD::QAB1(E),XS(c)
      • Refutation
        • P(e);XQ(E)
  • Actual
    • R(I);
    • Threat
      • B(G)
    • Vars
      • S(c);OGATE,XP(F)::QAB1(E),XP(b)
      • P(g);OGATE,XB(G)::QAB(E)
      • S(c);OGATE::QAB1(E),XP(b)
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