MESON Chess Problem Database

Problem Display
PID: 103640 (5Q1b/8/1p2R3/1p1Np1R1/1r1k3K/2pP1Bp1/2n1PN2/5nB1 w - - 0 1)

Liang, Li Tien

Chess, 1956

5Q1b/8/1p2R3/1p1Np1R1/1r1k3K/2pP1Bp1/2n1PN2/5nB1

#2

10 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sa1
      • 2.Qxb4#
    • 1...Se1
      • 2.Qxb4#
    • 1...e4
      • 2.Rxe4#
  • Tries
    • 1.Sd1+?
      • 1...Sce3
        • 2.Qxb4#
      • 1...Sfe3!
    • 1.Sh1+?
      • 1...Sce3
        • 2.Qxb4#
      • 1...Sfe3!
    • 1.Sh3+?
      • 1...Sce3
        • 2.Qxb4#
      • 1...Sfe3!
    • 1.Sg4+?
      • 1...Sce3
        • 2.Qxb4#
      • 1...Sfe3!
    • 1.Qd8?
      • threat
        • 2.Qxb6#
      • 1...Kc5+
        • 2.Se4#
      • 1...Rc4!
  • Keys
    • 1.Se7!
      • threat
        • 2.Sf5#
      • 1...Ke3+
        • 2.Se4#
      • 1...Kc5+
        • 2.Se4#
      • 1...Sfe3
        • 2.Sc6#
      • 1...Sce3
        • 2.Sc6#
      • 1...e4
        • 2.Rxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • S(b);N_GUARD::QAR2(J),XR(e)
    • P(h);OGATE::R1(I),XP(h)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • S(b);P_SPINS(b)::QAR2(J),XR(e)
      • Refutation
        • S(a);P_SPINS(a)
    • Try
      • S(C);CHECK
      • Vars
        • S(b);P_SPINS(b)::QAR2(J),XR(e)
      • Refutation
        • S(a);P_SPINS(a)
    • Try
      • S(C);CHECK
      • Vars
        • S(b);P_SPINS(b)::QAR2(J),XR(e)
      • Refutation
        • S(a);P_SPINS(a)
    • Try
      • S(C);CHECK
      • Vars
        • S(b);P_SPINS(b)::QAR2(J),XR(e)
      • Refutation
        • S(a);P_SPINS(a)
    • Try
      • Q(J);
      • Threat
        • QAB(J),XP(i)
      • Vars
        • K(f);CHECK,S_FLIGHT::B(A)+S(C),DCHECK
      • Refutation
        • R(e);
  • Actual
    • S(G);
    • Threat
      • S(G)
    • Vars
      • K(f);CHECK,P_SPINP(h),S_FLIGHT::B(A)+S(C)
      • K(f);CHECK,P_SPINP(h),S_FLIGHT::B(A)+S(C),DCHECK
      • S(a);SBLOCK::S(G)
      • S(b);SBLOCK::S(G)
      • P(h);OGATE::R1(I),XP(h)
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Developed and maintained by Brian Stephenson.
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