MESON Chess Problem Database

Problem Display
PID: 87362 (8/2B1p2B/p1R1P1n1/p1K1P2b/P3P1p1/2pkP1p1/Q5P1/3N1R2 w - - 0 1)

Chepizhni, Viktor Ivanovich

Marandiuk, Mikhail Nazarovich

Sachove umeni (Ceskoslovensky sach), 1971

8/2B1p2B/p1R1P1n1/p1K1P2b/P3P1p1/2pkP1p1/Q5P1/3N1R2

#2

13 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe4
      • 2.Qc4#
      • 2.Qd5#
      • 2.Qc2#
  • Tries
    • 1.Kd5?
      • threat
        • 2.Rxc3#
      • 1...c2
        • 2.Qxc2#
      • 1...Sf4+!
    • 1.Re1?
      • 1...Kxe4
        • 2.Qc2#
      • 1...Sxe5
        • 2.Qe2#
      • 1...c2
        • 2.Qd5#
      • 1...Sh4
        • 2.Qe2#
      • 1...Sf8
        • 2.Qe2#
      • 1...Sh8
        • 2.Qe2#
      • 1...Sf4!
    • 1.Rf2?
      • threat
        • 2.Qc4#
        • 2.Qd5#
        • 2.Qc2#
      • 1...Kxe4
        • 2.Qc4#
        • 2.Qd5#
        • 2.Qc2#
      • 1...Sxe5
        • 2.Qd5#
        • 2.Qc2#
        • 2.Qe2#
      • 1...Sf4
        • 2.Qc4#
        • 2.Qc2#
      • 1...c2
        • 2.Qc4#
        • 2.Qd5#
        • 2.Qxc2#
      • 1...gxf2!
    • 1.Rd6+?
      • 1...Kxe4
        • 2.Rd4#
        • 2.Qd5#
      • 1...exd6+!
    • 1.Qe2+?
      • 1...Kxe4
        • 2.Sxc3#
        • 2.Rf4#
        • 2.Qc4#
        • 2.Qc2#
      • 1...Kxe2!
  • Keys
    • 1.Kb6!
      • 1...Kxe4
        • 2.Qc4#
      • 1...Sxe5
        • 2.Rxc3#
      • 1...c2
        • 2.Qxc2#
      • 1...Sf4
        • 2.Rxc3#
      • 1...Sh4
        • 2.Rxc3#
      • 1...Sf8
        • 2.Rxc3#
      • 1...Sh8
        • 2.Rxc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(H);P-FLIGHT
      • Threat
        • R1(J),XP(a)
      • Vars
        • P(a);::QAB1(C),XP(a)
      • Refutation
        • S(h);CHECK
    • Try
      • R(B);
      • Vars
        • K(b);P_SPINS(h),S_FLIGHT,XP(G)::QAB(C)
        • S(h);XP(I)::QAB1(C)
        • P(a);SBLOCK::QAR2(C)
        • S(h);::QAB1(C)
      • Refutation
        • S(h);
    • Try
      • R(B);
      • Threat
        • DUALS(3)
      • Refutation
        • P(c);XR(B)
    • Try
      • R(J);CHECK
      • Refutation
        • P(i);CHECK,XR(J)
    • Try
      • Q(C);CHECK
      • Refutation
        • K(b);S_FLIGHT,XQ(C)
  • Actual
    • K(H);S_FLIGHT
    • Vars
      • K(b);P_SPINS(h),S_FLIGHT,XP(G)::QAR2(C)
      • S(h);XP(I)::R1(J),XP(a)
      • P(a);::QAB1(C),XP(a)
      • S(h);::R1(J),XP(a)
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