MESON Chess Problem Database

Problem Display
PID: 107976 (2QR3b/4R2K/1p5p/3r4/1p2NPp1/3k1P2/b1p1Np2/2B2Bq1 w - - 0 1)

Dyachuk, Vasyl Vasilovich

Springaren, 1998-1999

2QR3b/4R2K/1p5p/3r4/1p2NPp1/3k1P2/b1p1Np2/2B2Bq1

#2

10 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qh1
      • 2.Sxf2#
    • 1...Rd4
      • 2.Sxg1#
    • 1...Bd4
      • 2.Sxg1#
  • Tries
    • 1.S2c3+?
      • 1...Kd4
        • 2.Sb5#
      • 1...Qxf1!
    • 1.S2g3+?
      • 1...Kd4
        • 2.Sf5#
      • 1...Qxf1!
    • 1.Sd6?
      • threat
        • 2.Re3#
      • 1...Bd4
        • 2.Sxg1#
      • 1...Be5
        • 2.Qf5#
      • 1...Re5!
    • 1.Rxd5+?
      • 1...Bd4
        • 2.Sxg1#
        • 2.Rxd4#
      • 1...Bxd5!
  • Keys
    • 1.Qf5!
      • threat
        • 2.Sd2#
      • 1...Kc4
        • 2.Qxd5#
      • 1...Bd4
        • 2.Sxg1#
      • 1...Be5
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • Q(a);N_GUARD::S(E),XP(d)
    • R(h);::B(B)+S(C),XQ(a)
    • B(k);N_SPINR(h),SBLOCK::B(B)+S(C),XQ(a)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(e);P-FLIGHT::S(C)
      • Refutation
        • Q(a);XB(B)
    • Try
      • S(C);CHECK
      • Vars
        • K(e);P-FLIGHT::S(C)
      • Refutation
        • Q(a);XB(B)
    • Try
      • S(E);N_PINR(h)
      • Threat
        • R1(G)
      • Vars
        • B(k);SBLOCK::B(B)+S(C),XQ(a)
        • B(k);S_CUTR(h)::QAB(I)
      • Refutation
        • R(h);
    • Try
      • R(J);CHECK,XR(h)
      • Refutation
        • B(b);XR(J)
  • Actual
    • Q(I);
    • Threat
      • QAB(I)+S(E)
    • Vars
      • K(e);N_SPINR(h),S_FLIGHT::QAB1(I),XR(h)
      • B(k);N_SPINR(h),SBLOCK::B(B)+S(C),XQ(a)
      • B(k);::QAB(I)+S(E)
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