MESON Chess Problem Database

Problem Display
PID: 205093 (4B3/4Q3/Rpppn3/1rpk4/n3R3/BPr1pP1b/KpN5/1N6 w - - 0 1)

Pavlov, Danila

04. YCCC, 2019

4B3/4Q3/Rpppn3/1rpk4/n3R3/BPr1pP1b/KpN5/1N6

#2

10 + 12

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rc4
      • 2.Sxe3#
      • 2.bxc4#
    • 1...Bf1
      • 2.Qxe6#
    • 1...Bg2
      • 2.Qxe6#
    • 1...c4
      • 2.Qxd6#
  • Tries
    • 1.Rd4+?
      • 1...Sxd4
        • 2.Qe4#
      • 1...cxd4
        • 2.Qxd6#
      • 1...Ke5!
    • 1.Re5+?
      • 1...dxe5
        • 2.Qd7#
      • 1...Kxe5!
    • 1.Qg5+?
      • 1...Bf5
        • 2.Qxf5#
      • 1...Sxg5!
  • Keys
    • 1.Bxc5!
      • threat
        • 2.Qxd6#
      • 1...Kxc5
        • 2.Re5#
      • 1...Rcxc5
        • 2.Sxe3#
      • 1...Rbxc5
        • 2.Sb4#
      • 1...Saxc5
        • 2.Sxc3#
      • 1...Sexc5
        • 2.Rd4#
      • 1...bxc5
        • 2.Bxc6#
      • 1...dxc5
        • 2.Qd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 3
  • Sets
    • B(d);N_GUARD::QAB1(I),XS(l)
    • P(g);::QAR1(I),XP(k)
  • Tries
    • Try
      • R(G);CHECK
      • Vars
        • S(l);OGATE,XR(G)::QAB1(I)
        • P(g);XR(G)::QAR1(I),XP(k)
      • Refutation
        • K(h);P-FLIGHT,P_SPINS(l)
    • Try
      • R(G);CHECK
      • Vars
        • P(k);SBLOCK,XR(G)::QAR2(I)
      • Refutation
        • K(h);P-FLIGHT,P_SPINS(l),XR(G)
    • Try
      • Q(I);CHECK
      • Vars
        • B(d);N_GUARD,P_SPINB(d)::QAR2(I),XB(d)
      • Refutation
        • S(l);XQ(I)
  • Actual
    • B(D);XP(g)
    • Threat
      • QAR1(I),XP(k)
    • Vars
      • K(h);P-FLIGHT,P_SPINP(k),XB(D)::R(G)
      • R(b);N_GUARD,SBLOCK,XB(D)::S(C),XP(c)
      • R(f);N_GUARD,SBLOCK,XB(D)::S(C)
      • S(e);N_GUARD,SBLOCK,XB(D)::S(A),XR(b)
      • S(l);N_GUARD,SBLOCK,XB(D)::R1(G)
      • P(i);SBLOCK,XB(D)::B(J),XP(j)
      • P(k);OGATEB,SBLOCK,XB(D)::QAR2(I)
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