MESON Chess Problem Database

Problem Display
PID: 264962 (1R2B2b/1p1QppBb/7r/P1k2n2/K2N2nq/1p4r1/1N4p1/8 w - - 0 1)

Pituk, Sandor

Probleemblad, 1949

1R2B2b/1p1QppBb/7r/P1k2n2/K2N2nq/1p4r1/1N4p1/8

#2

8 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...Rh5
      • 2.Rc8#
    • 1...Rd6
      • 2.Qb5#
    • 1...Bg6
      • 2.Rc8#
    • 1...Sf6
      • 2.Rc8#
    • 1...Se3
      • 2.Sxb3#
    • 1...Sxd4
      • 2.Qxd4#
    • 1...b5+
      • 2.Rxb5#
    • 1...e6
      • 2.Rc8#
    • 1...f6
      • 2.Se6#
      • 2.Rc8#
  • Tries
    • 1.Se6+?
      • 1...fxe6
        • 2.Rc8#
      • 1...Rxe6!
    • 1.Rxb7?
      • threat
        • 2.Rb5#
      • 1...Sxd4
        • 2.Qxd4#
      • 1...Sd6
        • 2.Qc6#
      • 1...Rb6!
    • 1.Rd8?
      • threat
        • 2.Qb5#
        • 2.Qd5#
      • 1...b5+
        • 2.Qxb5#
      • 1...Sxd4
        • 2.Qxd4#
        • 2.Qd5#
      • 1...Rd6
        • 2.Qb5#
      • 1...Rb6
        • 2.Qd5#
      • 1...Rc6
        • 2.Qd5#
      • 1...Sge3
        • 2.Qb5#
      • 1...Sf6
        • 2.Rc8#
        • 2.Qb5#
        • 2.Qc8#
        • 2.Qc7#
      • 1...Sfe3
        • 2.Sxb3#
        • 2.Qb5#
      • 1...e6
        • 2.Rc8#
        • 2.Qb5#
        • 2.Qc8#
        • 2.Qc7#
      • 1...Sd6!
  • Keys
    • 1.Bxf7!
      • threat
        • 2.Qd5#
      • 1...b5+
        • 2.Rxb5#
      • 1...Rd6
        • 2.Qb5#
      • 1...Re6
        • 2.Sxe6#
      • 1...Sge3
        • 2.Sd3#
      • 1...Sf6
        • 2.Rc8#
      • 1...Sfe3
        • 2.Sxb3#
      • 1...Sd6
        • 2.Qc7#
      • 1...e6
        • 2.Rc8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • R(h);N_GUARD::R(G)
    • R(h);SBLOCK::QAR1(E)
    • B(l);S_CUTR(h)::R(G)
    • S(d);P_PINS(C),S_CUTR(h)::R(G)
    • S(g);S_CUTR(c)::S(C),XP(b)
    • S(g);OGATE,XS(C)::QAB1(E),XS(g)
    • P(i);CHECK,OGATE::R1(G),XP(i)
    • P(j);S_CUTR(h)::R(G)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • P(k);XS(C)::R(G)
      • Refutation
        • R(h);XS(C)
    • Try
      • R(G);XP(i)
      • Threat
        • R1(G)
      • Vars
        • S(g);OGATE,XS(C)::QAB1(E),XS(g)
        • S(g);S_CUTR(h)::QAR1(E)
      • Refutation
        • R(h);
    • Try
      • R(G);
      • Threat
        • DUALS(2)
      • Vars
        • P(i);CHECK::QAR1(E),XP(i)
        • R(h);::QAR1(E)
        • S(d);P_PINS(C)::QAR1(E)
      • Refutation
        • S(g);
  • Actual
    • B(H);XP(k)
    • Threat
      • QAR1(E)
    • Vars
      • P(i);CHECK,OGATE::R1(G),XP(i)
      • R(h);SBLOCK::QAR1(E)
      • R(h);N_GUARD::S(C),XR(h)
      • S(d);P_PINS(C),S_CUTR(c)::S(A)
      • S(d);P_PINS(C),S_CUTR(h)::R(G)
      • S(g);S_CUTR(c)::S(C),XP(b)
      • S(g);S_CUTR(h)::QAR2(E)
      • P(j);S_CUTR(h)::R(G)
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