MESON Chess Problem Database

Problem Display
PID: 270390 (qB1r1n2/1nr2N1P/7P/p3p2K/3kP2R/Q2p4/B3R3/8 w - - 0 1)

Suvorov, Ivan

Shakhmatnaya kompozitsiya, 1997

qB1r1n2/1nr2N1P/7P/p3p2K/3kP2R/Q2p4/B3R3/8

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rc1
      • 2.Bxe5#
    • 1...Rc2
      • 2.Bxe5#
    • 1...Rc3
      • 2.Bxe5#
    • 1...Rc4
      • 2.Bxe5#
    • 1...Rc6
      • 2.Bxe5#
    • 1...Rcd7
      • 2.Bxe5#
    • 1...Rcc8
      • 2.Bxe5#
    • 1...Sc5
      • 2.Qb2#
    • 1...d2
      • 2.Rxd2#
      • 2.Qe3#
  • Tries
    • 1.Ba7+?
      • 1...Rc5
        • 2.Qb2#
      • 1...Sc5
        • 2.Qb2#
      • 1...Qxa7!
    • 1.Rh3?
      • threat
        • 2.Rxd3#
      • 1...dxe2
        • 2.Qe3#
      • 1...Rc3
        • 2.Bxe5#
      • 1...Sc5
        • 2.Qb2#
      • 1...d2
        • 2.Rd3#
        • 2.Qe3#
      • 1...Qa6!
    • 1.Qb4+?
      • 1...Rc4
        • 2.Bxe5#
        • 2.Qxc4#
      • 1...axb4!
  • Keys
    • 1.Sxe5!
      • threat
        • 2.Sf3#
      • 1...Kxe5
        • 2.h8Q#
        • 2.h8B#
      • 1...Rc5
        • 2.Qxd3#
      • 1...Rf7
        • 2.Sc6#
      • 1...Rd5
        • 2.exd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 8
  • Sets
    • R(f);OGATE::B(J),XP(d)
    • S(e);SBLOCK,S_CUTR(f)::QAB(C)
  • Tries
    • Try
      • B(J);CHECK
      • Vars
        • R(f);P_SPINR(f)::QAB(C)
        • S(e);P_SPINS(e)::QAB(C)
      • Refutation
        • Q(g);XB(J)
    • Try
      • R(E);
      • Threat
        • R1(E),XP(a)
      • Vars
        • P(a);OGATE,XR(B)::QAB1(C)
        • R(f);OGATE::B(J),XP(d)
        • S(e);SBLOCK,S_CUTR(f)::QAB(C)
      • Refutation
        • Q(g);
    • Try
      • Q(C);CHECK
      • Refutation
        • P(c);XQ(C)
  • Actual
    • S(H);XP(d)
    • Threat
      • S(H)
    • Vars
      • K(b);P_SPINR(f),S_FLIGHT,XS(H)::P=Q
      • R(f);P_PINS(H),SBLOCK::QAR1(C),XP(a)
      • R(f);N_GUARD::S(H)
      • R(h);OGATE,P_PINS(H)::R(E)+P(D),XR(h)
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