MESON Chess Problem Database

Problem Display
PID: 149899 (6B1/8/p5Rp/r3kp2/nR6/2pPp3/P1Q4P/5K2 w - - 0 1)

Burr, Otto

Shakhmatnaya kompozitsiya, 2004

6B1/8/p5Rp/r3kp2/nR6/2pPp3/P1Q4P/5K2

#2

8 + 8

15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.Re6#
    • 1...Sb2
      • 2.Qxc3#
    • 1...Sc5
      • 2.Qxc3#
    • 1...Sb6
      • 2.Qxc3#
    • 1...e2+
      • 2.Qxe2#
    • 1...f4
      • 2.d4#
  • Tries
    • 1.Bb3?
      • threat
        • 2.Re6#
      • 1...e2+
        • 2.Qxe2#
      • 1...f4
        • 2.d4#
      • 1...Sc5
        • 2.Qxc3#
      • 1...Rd5!
    • 1.Rh4?
      • threat
        • 2.d4#
      • 1...e2+
        • 2.Qxe2#
      • 1...Rd5
        • 2.Re6#
      • 1...f4!
    • 1.Qb3?
      • threat
        • 2.Re6#
        • 2.Qe6#
      • 1...f4
        • 2.Qe6#
      • 1...Rd5
        • 2.Re6#
        • 2.Qxd5#
      • 1...Sc5
        • 2.Qd5#
        • 2.Qxc3#
      • 1...e2+!
    • 1.Qe2?
      • threat
        • 2.Qxe3#
      • 1...f4
        • 2.Qh5#
      • 1...Sc5!
    • 1.Qf2?
      • threat
        • 2.Qxe3#
        • 2.Qf4#
      • 1...e2+
        • 2.Qxe2#
      • 1...f4
        • 2.Qxf4#
      • 1...Sc5
        • 2.Qf4#
      • 1...exf2!
  • Keys
    • 1.Qg2!
      • threat
        • 2.Re6#
      • 1...e2+
        • 2.Qxe2#
      • 1...f4
        • 2.Qe4#
      • 1...Sc5
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 3
  • Sets
    • R(d);SBLOCK::R1(G)
    • S(c);N_GUARD::QAB(C),XP(a)
    • P(b);CHECK,OGATEB::QAR(C),XP(b)
    • P(f);SBLOCK::P(E)
  • Tries
    • Try
      • B(H);
      • Threat
        • R1(G)
      • Vars
        • P(b);CHECK,OGATEB::QAR(C),XP(b)
        • P(f);SBLOCK::P(E)
        • S(c);N_GUARD::QAB(C),XP(a)
      • Refutation
        • R(d);
    • Try
      • R(F);
      • Threat
        • P(E)
      • Vars
        • P(b);CHECK,OGATEB::QAR(C),XP(b)
        • R(d);SBLOCK::R1(G)
      • Refutation
        • P(f);
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • P(f);::QAR1(C)
      • Refutation
        • P(b);CHECK
    • Try
      • Q(C);P_PINP(b)
      • Threat
        • QAR2(C),XP(b)
      • Vars
        • P(f);OGATEB::QAR(C)
      • Refutation
        • S(c);
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);CHECK,OGATEB::QAR(C),XP(b)
        • P(f);::QAB1(C),XP(f)
        • S(c);::QAB1(C)
      • Refutation
        • P(b);XQ(C)
  • Actual
    • Q(C);
    • Threat
      • R1(G)
    • Vars
      • P(b);CHECK,OGATEB::QAR(C),XP(b)
      • P(f);N_GUARD::QAR1(C)
      • S(c);S_CUTR(d)::QAR1(C)
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