MESON Chess Problem Database

Problem Display
PID: 120893 (8/7p/2p3pB/2P3R1/4Kn2/2p5/Q1nk2p1/6Rb w - - 0 1)

Gruber, Bratoljub

1st Prize, Yugoslav National Ty., 1959-1960

8/7p/2p3pB/2P3R1/4Kn2/2p5/Q1nk2p1/6Rb

#2

6 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ke2
      • 2.Qxc2#
    • 1...Se2
      • 2.Rd5#
    • 1...Sd3
      • 2.R5xg2#
    • 1...Sh3
      • 2.R5xg2#
    • 1...Sd5
      • 2.R5xg2#
    • 1...Sh5
      • 2.R5xg2#
    • 1...Se6
      • 2.R5xg2#
  • Tries
    • 1.Kxf4?
      • 1...Ke2
        • 2.Qxc2#
      • 1...Kd3!
    • 1.Rd1+?
      • 1...Ke2
        • 2.Qxc2#
      • 1...Kxd1!
    • 1.Rg3?
      • 1...Ke2
        • 2.Qxc2#
      • 1...g5!
    • 1.Rg4?
      • 1...Ke2
        • 2.Qxc2#
      • 1...g5!
    • 1.Rd5+?
      • 1...Ke2
        • 2.Qxc2#
      • 1...cxd5+!
    • 1.Re5?
      • 1...Ke2
        • 2.Qxc2#
      • 1...g5!
    • 1.Rxg6?
      • 1...Ke2
        • 2.Qxc2#
      • 1...hxg6!
    • 1.Qb2?
      • 1...Ke2
        • 2.Qxc2#
      • 1...Se2
        • 2.Rd5#
      • 1...Sd3
        • 2.R5xg2#
      • 1...Sh3
        • 2.R5xg2#
      • 1...Sd5
        • 2.R5xg2#
      • 1...Sh5
        • 2.R5xg2#
      • 1...Se6
        • 2.R5xg2#
      • 1...cxb2!
  • Keys
    • 1.Kf3!
      • 1...Kd3
        • 2.Rd1#
      • 1...Se2
        • 2.Rd5#
      • 1...Sd3
        • 2.R5xg2#
      • 1...Sh3
        • 2.Rd5#
      • 1...Sd5
        • 2.Rxd5#
      • 1...Sh5
        • 2.Rd5#
      • 1...Se6
        • 2.Rd5#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 4
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(c);P-FLIGHT::QAR2(B),XS(b)
    • S(f);SBLOCK::B(F)+R(E),DCHECK
    • S(f);::B(F)+R(E),DCHECK,XP(d)
  • Tries
    • Try
      • K(C);P-FLIGHT,XS(f)
      • Vars
        • K(c);P-FLIGHT::QAR2(B),XS(b)
      • Refutation
        • K(c);N_SPINS(b),P-FLIGHT
    • Try
      • R(A);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR2(B),XS(b)
      • Refutation
        • K(c);N_SPINS(b),P-FLIGHT,XR(A)
    • Try
      • R(E);
      • Vars
        • K(c);P-FLIGHT::QAR2(B),XS(b)
      • Refutation
        • P(h);
    • Try
      • R(E);
      • Vars
        • K(c);P-FLIGHT::QAR2(B),XS(b)
      • Refutation
        • P(h);
    • Try
      • R(E);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR2(B),XS(b)
      • Refutation
        • P(g);CHECK,XR(E)
    • Try
      • R(E);
      • Vars
        • K(c);P-FLIGHT::QAR2(B),XS(b)
      • Refutation
        • P(h);
    • Try
      • R(E);XP(h)
      • Vars
        • K(c);P-FLIGHT::QAR2(B),XS(b)
      • Refutation
        • P(i);XR(E)
    • Try
      • Q(B);
      • Vars
        • K(c);P-FLIGHT::QAR2(B),XS(b)
        • S(f);SBLOCK::B(F)+R(E),DCHECK
        • S(f);::B(F)+R(E),DCHECK,XP(d)
      • Refutation
        • P(e);N_SPINS(b),XQ(B)
  • Actual
    • K(C);S_FLIGHT
    • Vars
      • K(c);N_SPINS(b),P-FLIGHT::R(A)
      • S(f);::B(F)+R(E),DCHECK
      • S(f);SBLOCK::B(F)+R(E),DCHECK,XP(d)
      • S(f);::B(F)+R(E),DCHECK,XS(f)
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