MESON Chess Problem Database

Problem Display
PID: 132139 (5N1b/1K6/4N3/3pk3/1p2P1PB/2p3R1/1Q6/1B6 w - - 0 1)

Antonov, Yuri Mikhailovich

Lodkoritov, S

Suta, 1985

5N1b/1K6/4N3/3pk3/1p2P1PB/2p3R1/1Q6/1B6

#2

9 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Rd3?
      • threat
        • 2.Rxd5#
      • 1...Kxe4
        • 2.Qe2#
      • 1...Kd6
        • 2.Rxd5#
      • 1...dxe4
        • 2.Qh2#
      • 1...d4!
    • 1.Qxc3+?
      • 1...Kd6
        • 2.Qc7#
      • 1...d4
        • 2.Qxd4#
        • 2.Qc5#
        • 2.Qc7#
      • 1...bxc3!
    • 1.Qd2?
      • threat
        • 2.Qf4#
        • 2.Qxd5#
      • 1...Kd6
        • 2.Qxd5#
      • 1...dxe4
        • 2.Qd4#
      • 1...d4
        • 2.Qf4#
        • 2.Qxd4#
      • 1...cxd2!
    • 1.Qf2?
      • threat
        • 2.Qf4#
      • 1...dxe4
        • 2.Qd4#
        • 2.Qc5#
      • 1...Kd6!
    • 1.Qh2?
      • threat
        • 2.Rg1#
        • 2.Rg2#
        • 2.Rxc3#
        • 2.Re3#
        • 2.Rf3#
        • 2.Rh3#
      • 1...dxe4
        • 2.Rd3#
      • 1...c2
        • 2.Re3#
      • 1...Kd6!
    • 1.Qb3?
      • threat
        • 2.Qxd5#
      • 1...Kd6
        • 2.Qxd5#
      • 1...d4
        • 2.Qd5#
      • 1...dxe4!
  • Keys
    • 1.Rxc3!
      • threat
        • 2.Qh2#
      • 1...Kd6
        • 2.Rc6#
      • 1...dxe4
        • 2.Rd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(C);
      • Threat
        • R1(C),XP(c)
      • Vars
        • K(d);N_SPINP(a),OGATEB,P-FLIGHT,XP(D)::QAR2(B)
        • K(d);N_SPINP(a),P_SPINP(c),S_FLIGHT::R1(C),XP(c)
        • P(c);SBLOCK,XP(D)::QAB(B)
      • Refutation
        • P(c);N_SPINP(a)
    • Try
      • Q(B);CHECK,XP(a)
      • Vars
        • K(d);S_FLIGHT::QAB1(B)
      • Refutation
        • P(b);XQ(B)
    • Try
      • Q(B);N_PINP(a)
      • Threat
        • DUALS(2)
      • Vars
        • K(d);P_SPINP(c),S_FLIGHT::QAR1(B),XP(c)
        • P(c);XP(D)::QAB1(B)
      • Refutation
        • P(a);XQ(B)
    • Try
      • Q(B);N_PINP(a)
      • Threat
        • QAB1(B)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(B);N_PINP(a)
      • Threat
        • DUALS(6)
      • Vars
        • P(c);SBLOCK,XP(D)::QAB(B)+R(C)
        • P(a);::QAB(B)+R(C)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(B);N_PINP(a)
      • Threat
        • QAR1(B),XP(c)
      • Vars
        • K(d);S_FLIGHT::QAR1(B),XP(c)
        • P(c);::QAR1(B)
      • Refutation
        • P(c);XP(D)
  • Actual
    • R(C);XP(a)
    • Threat
      • QAB(B)
    • Vars
      • K(d);S_FLIGHT::R1(C)
      • P(c);N_GUARD,SBLOCK,XP(D)::QAB(B)+R(C)
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