MESON Chess Problem Database

Problem Display
PID: 110832 (1Q6/4p3/8/1p5r/1KPkp2p/RnNP1nNR/r3b3/2B5 w - - 0 1)

Pituk, Alexander

Szachy, 1955

1Q6/4p3/8/1p5r/1KPkp2p/RnNP1nNR/r3b3/2B5

#2

9 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sc5
      • 2.Sxb5#
    • 1...Sd2
      • 2.Sgxe2#
    • 1...Sg5
      • 2.Sf5#
    • 1...exd3
      • 2.Qf4#
    • 1...e5
      • 2.Qd6#
      • 2.Qd8#
  • Tries
    • 1.Qd6+?
      • 1...Rd5
        • 2.Qxd5#
      • 1...exd6!
    • 1.Qd8+?
      • 1...Rd5
        • 2.Qxd5#
      • 1...Ke5!
  • Keys
    • 1.Qf4!
      • threat
        • 2.Qxe4#
      • 1...Kxd3
        • 2.Qxe4#
      • 1...Bxd3
        • 2.Be3#
      • 1...Re5
        • 2.Qe3#
      • 1...Sbd2
        • 2.Scxe2#
      • 1...Sc5
        • 2.Sxb5#
      • 1...Sfd2
        • 2.Sgxe2#
      • 1...Sg5
        • 2.Sf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • S(c);S_CUTR(i)::S(C),XP(h)
    • S(d);S_CUTR(a)::S(E),XB(b)
    • S(d);S_CUTR(i)::S(E)
    • P(f);OGATEB,SBLOCK,XP(D)::QAR2(I)
  • Tries
    • Try
      • Q(I);CHECK
      • Vars
        • R(i);N_GUARD,P_SPINR(i)::QAR1(I),XR(i)
      • Refutation
        • P(j);XQ(I)
    • Try
      • Q(I);CHECK
      • Vars
        • R(i);N_GUARD,P_SPINR(i)::QAR1(I),XR(i)
      • Refutation
        • K(e);S_FLIGHT
  • Actual
    • Q(I);P_PINP(f)
    • Threat
      • QAR1(I),XP(f)
    • Vars
      • K(e);N_SPINP(f),P-FLIGHT,XP(D)::QAB1(I),XP(f)
      • B(b);SBLOCK,XP(D)::B(A)
      • R(i);SBLOCK::QAB1(I)
      • S(c);S_CUTR(a)::S(C),XB(b)
      • S(c);S_CUTR(i)::S(C),XP(h)
      • S(d);S_CUTR(a)::S(E),XB(b)
      • S(d);S_CUTR(i)::S(E)
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