MESON Chess Problem Database

Problem Display
PID: 54995 (8/3p4/2pB1pR1/Q4N1p/P3k3/1B2Pbb1/K1P3r1/5R2 w - - 0 1)

Melnichenko, Viktor Oleksandrovich

5th Comm., Die Schwalbe, 1999/I

8/3p4/2pB1pR1/Q4N1p/P3k3/1B2Pbb1/K1P3r1/5R2

#2

10 + 8

23 Die Schwalbe 2003

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc2+
      • 2.Bxc2#
    • 1...Bd1
      • 2.Qb4#
    • 1...Bg4
      • 2.Qb4#
  • Tries
    • 1.Sxg3+?
      • 1...Kxe3
        • 2.Qc3#
      • 1...Rxg3!
    • 1.Bf4?
      • threat
        • 2.Sd6#
      • 1...Rxc2+
        • 2.Bxc2#
      • 1...Rd2
        • 2.Sxg3#
      • 1...d6
        • 2.Sxd6#
      • 1...Bxf4!
    • 1.Rg4+?
      • 1...Bxg4
        • 2.Qb4#
      • 1...Bf4
        • 2.Rxf4#
      • 1...hxg4!
  • Keys
    • 1.Qc3!
      • threat
        • 2.Qd3#
      • 1...Rxc2+
        • 2.Qxc2#
      • 1...Kxf5
        • 2.Qd3#
      • 1...Bxd6
        • 2.Sxd6#
      • 1...Rd2
        • 2.Sxg3#
      • 1...Be2
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • R(a);CHECK,OGATE,XP(C)::B(D),XR(a)
    • B(b);::QAR(G)
  • Tries
    • Try
      • S(H);CHECK,XB(c)
      • Vars
        • K(d);P-FLIGHT,XP(E)::QAR2(G)
      • Refutation
        • R(a);N_PINP(C),XS(H)
    • Try
      • B(I);
      • Threat
        • S(H)
      • Vars
        • R(a);CHECK,OGATE,XP(C)::B(D),XR(a)
        • R(a);N_GUARD::S(H),XB(c)
        • P(h);::S(H),XP(h)
      • Refutation
        • B(c);XB(I)
    • Try
      • R(J);CHECK
      • Vars
        • B(b);XR(J)::QAR(G)
        • B(c);N_GUARD,P_SPINB(c)::R1(J),XB(c)
      • Refutation
        • P(e);XR(J)
  • Actual
    • Q(G);
    • Threat
      • QAB1(G)
    • Vars
      • R(a);CHECK,OGATE,XP(C)::QAB(G),XR(a)
      • K(d);P_SPINB(b),S_FLIGHT,XS(H)::QAB(G)
      • B(c);XB(I)::S(H),XB(c)
      • R(a);N_GUARD::S(H),XB(c)
      • B(b);N_PINP(C)::QAR1(G)
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