MESON Chess Problem Database

Problem Display
PID: 77697 (1K2b3/3N4/6P1/k3p2R/1R3B2/2PB1r2/2p1rP1b/n4q1Q w - - 0 1)

Markov, Evgeny Viktorovich

Polin, Genady

StrateGems, 2007

1K2b3/3N4/6P1/k3p2R/1R3B2/2PB1r2/2p1rP1b/n4q1Q

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qg2
      • 2.Qxa1#
    • 1...Qh3
      • 2.Qxa1#
    • 1...Qxf2
      • 2.Qxa1#
    • 1...Rd2
      • 2.Rxe5#
    • 1...Rexf2
      • 2.Rxe5#
    • 1...Rfxf2
      • 2.Qd5#
      • 2.Qa8#
    • 1...Rxd3
      • 2.Qa8#
    • 1...Re3
      • 2.Qd5#
      • 2.Qa8#
    • 1...Rg3
      • 2.Qd5#
      • 2.Qa8#
    • 1...Rh3
      • 2.Qd5#
      • 2.Qa8#
    • 1...Rxf4
      • 2.Qd5#
      • 2.Qa8#
  • Tries
    • 1.Sc5?
      • threat
        • 2.Sb7#
      • 1...Rxd3
        • 2.Qa8#
      • 1...Bb5
        • 2.Rxb5#
      • 1...Bc6!
    • 1.Be3?
      • threat
        • 2.Bb6#
      • 1...Qxf2
        • 2.Qxa1#
      • 1...Rfxe3
        • 2.Qd5#
        • 2.Qa8#
      • 1...Rf6
        • 2.Qd5#
      • 1...Rexe3!
    • 1.Rb5+?
      • 1...Ka6
        • 2.Sc5#
      • 1...Ka4!
  • Keys
    • 1.Bg5!
      • threat
        • 2.Bd8#
      • 1...e4+
        • 2.Bf4#
      • 1...Qxf2
        • 2.Qxa1#
      • 1...Rxd3
        • 2.Qa8#
      • 1...Rf6
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • Q(b);OGATE::QAR(A),XS(a)
    • Q(b);OGATE,XP(B)::QAR(A),XS(a)
    • R(d);N_GUARD::R(G),XP(h)
    • R(d);N_GUARD,XP(B)::R(G),XP(h)
    • R(f);OGATE,XB(D)::QAR(A)
  • Tries
    • Try
      • S(I);N_PINP(h)
      • Threat
        • S(I)
      • Vars
        • R(f);OGATE,XB(D)::QAR(A)
        • B(i);N_GUARD::R1(E),XB(i)
      • Refutation
        • B(i);
    • Try
      • B(F);
      • Threat
        • B(F)
      • Vars
        • Q(b);OGATE,XP(B)::QAR(A),XS(a)
        • R(f);OGATE::QAR(A)
      • Refutation
        • R(d);XB(F)
    • Try
      • R(E);CHECK,N_PINP(h)
      • Vars
        • K(g);P-FLIGHT::S(I)
      • Refutation
        • K(g);P-FLIGHT
  • Actual
    • B(F);N_PINP(h)
    • Threat
      • B(F)
    • Vars
      • P(h);CHECK,OGATEB::R(G)+B(F)
      • Q(b);OGATE,XP(B)::QAR(A),XS(a)
      • R(f);OGATE,XB(D)::QAR(A)
      • R(f);OGATE::QAR(A)
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