MESON Chess Problem Database

Problem Display
PID: 86747 (3R2N1/6pK/r5p1/1N2pk2/2R5/1Q5P/8/2B1n3 w - - 0 1)

Pletenev, Nikolai Alexeyevich

Boletim da UBP, 1991

3R2N1/6pK/r5p1/1N2pk2/2R5/1Q5P/8/2B1n3

#2

8 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ke6
      • 2.Rf4#
    • 1...e4
      • 2.Rc5#
  • Tries
    • 1.Sd4+?
      • 1...Ke4
        • 2.Qe3#
      • 1...exd4!
    • 1.Sd6+?
      • 1...Ke6
        • 2.Rc2#
        • 2.Rc3#
        • 2.Ra4#
        • 2.Rb4#
        • 2.Rd4#
        • 2.Re4#
        • 2.Rf4#
        • 2.Rg4#
        • 2.Rh4#
        • 2.Rc5#
        • 2.Rc6#
        • 2.Rc7#
        • 2.Rcc8#
      • 1...Rxd6!
    • 1.Rf4+?
      • 1...exf4
        • 2.Qd5#
      • 1...Kg5!
    • 1.Rf8+?
      • 1...Ke6
        • 2.Rd4#
        • 2.Rc7#
      • 1...Rf6!
    • 1.Qd1?
      • threat
        • 2.Qg4#
      • 1...Ke6
        • 2.Qd7#
      • 1...e4
        • 2.Qd5#
      • 1...Sf3!
    • 1.Qd3+?
      • 1...Ke6
        • 2.Qxg6#
        • 2.Qd7#
      • 1...e4
        • 2.Qxe4#
        • 2.Qd5#
      • 1...Sxd3!
    • 1.Qf3+?
      • 1...Ke6
        • 2.Sc7#
      • 1...Sxf3!
  • Keys
    • 1.Qg3!
      • threat
        • 2.Qg4#
      • 1...Ke6
        • 2.Qxg6#
      • 1...e4
        • 2.Sd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::QAB(B)+R(D)
    • P(b);OGATEB,SBLOCK::R(D)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR1(B)
      • Refutation
        • P(b);XS(E)
    • Try
      • S(E);CHECK
      • Refutation
        • R(d);XS(E)
    • Try
      • R(D);CHECK
      • Vars
        • P(b);XR(D)::QAR2(B)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • R(G);CHECK
      • Refutation
        • R(d);P_SPINR(d)
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • K(c);S_FLIGHT::QAB1(B)
        • P(b);OGATEB::QAR2(B)
      • Refutation
        • S(a);
    • Try
      • Q(B);CHECK
      • Refutation
        • S(a);XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);S_FLIGHT::S(E)
      • Refutation
        • S(a);XQ(B)
  • Actual
    • Q(B);
    • Threat
      • QAB1(B)
    • Vars
      • K(c);S_FLIGHT::QAR2(B),XP(e)
      • P(b);N_GUARD,SBLOCK::S(E)
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